REWRITE: Introducing: More bits for Song Changed SC_* flags.

Added MusECore::SongChangedFlags_t (in new type_defs.h file). Declared as int64 type.
All Song Changed parameters, handlers, connections, calls, colateral operations etc. now use 
 this new SongChangedFlags_t. 
All the handlers are now ready for the code bodies to accept any extra flags, devs need not
 do anything more than define new SC_* flags and write support inside the handlers.
Please beware these possible extra flags when writing songChanged handlers and setting updateFlags. 

84 files changed, 224 insertions, 174 deletions

diff --git a/muse2/muse/arranger/arranger.cpp b/muse2/muse/arranger/arranger.cpp
index 62c405d3..d25aa0b9 100644
--- a/muse2/muse/arranger/arranger.cpp
+++ b/muse2/muse/arranger/arranger.cpp
@@ -524,7 +524,7 @@ Arranger::Arranger(ArrangerView* parent, const char* name)
       connect(canvas, SIGNAL(dclickPart(MusECore::Track*)), SIGNAL(editPart(MusECore::Track*)));
       connect(canvas, SIGNAL(startEditor(MusECore::PartList*,int)),   SIGNAL(startEditor(MusECore::PartList*, int)));
 
-      connect(MusEGlobal::song,   SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      connect(MusEGlobal::song,   SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
       connect(canvas, SIGNAL(followEvent(int)), hscroll, SLOT(setOffset(int)));
       connect(canvas, SIGNAL(selectionChanged()), SIGNAL(selectionChanged()));
       connect(canvas, SIGNAL(dropSongFile(const QString&)), SIGNAL(dropSongFile(const QString&)));
@@ -643,7 +643,7 @@ void Arranger::songlenChanged(int n)
 //   songChanged
 //---------------------------------------------------------
 
-void Arranger::songChanged(int type)
+void Arranger::songChanged(MusECore::SongChangedFlags_t type)
       {
       // Is it simply a midi controller value adjustment? Forget it.
       if(type != SC_MIDI_CONTROLLER)
@@ -1160,7 +1160,7 @@ void Arranger::genTrackInfo(QWidget* parent)
 //   updateTrackInfo
 //---------------------------------------------------------
 
-void Arranger::updateTrackInfo(int flags)
+void Arranger::updateTrackInfo(MusECore::SongChangedFlags_t flags)
       {
       if (!showTrackinfoFlag) {
             switchInfo(-1);
@@ -1198,7 +1198,7 @@ void Arranger::switchInfo(int n)
                         delete w;
                   w = new AudioStrip(trackInfo, (MusECore::AudioTrack*)selected);
                   //w->setFocusPolicy(Qt::TabFocus);  // p4.0.9
-                  connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), w, SLOT(songChanged(int)));
+                  connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), w, SLOT(songChanged(MusECore::SongChangedFlags_t)));
                   connect(MusEGlobal::muse, SIGNAL(configChanged()), w, SLOT(configChanged()));
                   w->setSizePolicy(QSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed));
                   trackInfo->addWidget(w, 2);
diff --git a/muse2/muse/arranger/arranger.h b/muse2/muse/arranger/arranger.h
index 60390a8f..f37edd9b 100644
--- a/muse2/muse/arranger/arranger.h
+++ b/muse2/muse/arranger/arranger.h
@@ -29,6 +29,7 @@
 #include <QScrollBar>
 #include <QResizeEvent>
 
+#include "type_defs.h"
 #include "midieditor.h"
 #include "pcanvas.h"
 #include "trackautomationview.h"
@@ -156,7 +157,7 @@ class Arranger : public QWidget {
       void showTrackInfo(bool);
       void trackSelectionChanged();
       void trackInfoScroll(int);
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
       void modeChange(int);
       void setTime(unsigned);
       void globalPitchChanged(int);
@@ -184,7 +185,7 @@ class Arranger : public QWidget {
    public slots:
       void dclickPart(MusECore::Track*);
       void setTool(int);
-      void updateTrackInfo(int flags);
+      void updateTrackInfo(MusECore::SongChangedFlags_t flags);
       void configChanged();
       void controllerChanged(MusECore::Track *t, int ctrlId);
       void focusCanvas();
diff --git a/muse2/muse/arranger/arrangerview.cpp b/muse2/muse/arranger/arrangerview.cpp
index 14a0d8ef..66e3bbbb 100644
--- a/muse2/muse/arranger/arrangerview.cpp
+++ b/muse2/muse/arranger/arrangerview.cpp
@@ -113,7 +113,7 @@ ArrangerView::ArrangerView(QWidget* parent)
   connect(MusEGlobal::muse, SIGNAL(configChanged()), arranger, SLOT(configChanged()));
   connect(arranger, SIGNAL(setUsedTool(int)), editTools, SLOT(set(int)));
   connect(arranger, SIGNAL(selectionChanged()), SLOT(selectionChanged()));
-  connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), this, SLOT(songChanged(int)));
+  connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), this, SLOT(songChanged(MusECore::SongChangedFlags_t)));
 
 
 
@@ -379,7 +379,7 @@ void ArrangerView::closeEvent(QCloseEvent* e)
 //   songChanged
 //---------------------------------------------------------
 
-void ArrangerView::songChanged(int type)
+void ArrangerView::songChanged(MusECore::SongChangedFlags_t type)
 {
   // TEST Try these, may need more/less. Esp more: Originally songChanged was directly connected to updateVisibleTracksButtons, so... 
   if(type & (SC_TRACK_INSERTED | SC_TRACK_REMOVED | SC_TRACK_MODIFIED | 
diff --git a/muse2/muse/arranger/arrangerview.h b/muse2/muse/arranger/arrangerview.h
index 94e49e96..6a8f47c9 100644
--- a/muse2/muse/arranger/arrangerview.h
+++ b/muse2/muse/arranger/arrangerview.h
@@ -41,6 +41,7 @@
 #include <QToolButton>
 
 #include <limits.h>
+#include "type_defs.h"
 #include "noteinfo.h"
 #include "cobject.h"
 #include "event.h"
@@ -128,7 +129,7 @@ class ArrangerView : public TopWin
                 void cmd(int);
                 void addNewTrack(QAction* action);
                 void configCustomColumns();
-                void songChanged(int);
+                void songChanged(MusECore::SongChangedFlags_t);
 
 	signals:
 		void isDeleting(MusEGui::TopWin*);
diff --git a/muse2/muse/arranger/pcanvas.cpp b/muse2/muse/arranger/pcanvas.cpp
index c5c3ca6d..5e754e25 100644
--- a/muse2/muse/arranger/pcanvas.cpp
+++ b/muse2/muse/arranger/pcanvas.cpp
@@ -266,7 +266,7 @@ void PartCanvas::viewMouseDoubleClickEvent(QMouseEvent* event)
 //   update
 //---------------------------------------------------------
 
-void PartCanvas::updateSong(DragType t, int flags)
+void PartCanvas::updateSong(DragType t, MusECore::SongChangedFlags_t flags)
       {
       MusEGlobal::song->update(flags | ((t == MOVE_COPY || t == MOVE_CLONE)
          ? SC_PART_INSERTED : SC_PART_MODIFIED));
diff --git a/muse2/muse/arranger/pcanvas.h b/muse2/muse/arranger/pcanvas.h
index 1b766c5d..c9e4c946 100644
--- a/muse2/muse/arranger/pcanvas.h
+++ b/muse2/muse/arranger/pcanvas.h
@@ -28,6 +28,7 @@
 #include <set>
 #include <QTime>
 
+#include "type_defs.h"
 #include "song.h"
 #include "canvas.h"
 #include "trackautomationview.h"
@@ -123,7 +124,7 @@ class PartCanvas : public Canvas {
       virtual void moveCanvasItems(CItemList&, int, int, DragType);
       virtual bool moveItem(MusECore::Undo& operations, CItem*, const QPoint&, DragType);
 
-      virtual void updateSong(DragType, int);
+      virtual void updateSong(DragType, MusECore::SongChangedFlags_t);
       virtual void startDrag(CItem*, DragType);
       virtual void dragEnterEvent(QDragEnterEvent*);
       virtual void viewDropEvent(QDropEvent*);
diff --git a/muse2/muse/arranger/tlist.cpp b/muse2/muse/arranger/tlist.cpp
index 4d2a1251..6f8837e8 100644
--- a/muse2/muse/arranger/tlist.cpp
+++ b/muse2/muse/arranger/tlist.cpp
@@ -113,7 +113,7 @@ TList::TList(Header* hdr, QWidget* parent, const char* name)
       //setAttribute(Qt::WA_OpaquePaintEvent);
       resizeFlag = false;
 
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
       connect(MusEGlobal::muse, SIGNAL(configChanged()), SLOT(redraw()));
       connect(MusEGlobal::heartBeatTimer, SIGNAL(timeout()), SLOT(maybeUpdateVolatileCustomColumns()));
       }
@@ -122,7 +122,7 @@ TList::TList(Header* hdr, QWidget* parent, const char* name)
 //   songChanged
 //---------------------------------------------------------
 
-void TList::songChanged(int flags)
+void TList::songChanged(MusECore::SongChangedFlags_t flags)
       {
       if (flags & (SC_MUTE | SC_SOLO | SC_RECFLAG | SC_TRACK_INSERTED
          | SC_TRACK_REMOVED | SC_TRACK_MODIFIED | SC_ROUTE | SC_CHANNELS | SC_MIDI_TRACK_PROP
diff --git a/muse2/muse/arranger/tlist.h b/muse2/muse/arranger/tlist.h
index d3701451..fd05cac9 100644
--- a/muse2/muse/arranger/tlist.h
+++ b/muse2/muse/arranger/tlist.h
@@ -23,6 +23,7 @@
 #ifndef __TLIST_H__
 #define __TLIST_H__
 
+#include "type_defs.h"
 #include "track.h"
 #include <map>
 #include <QWidget>
@@ -123,7 +124,7 @@ class TList : public QWidget {
       void chanValueFinished();
       void ctrlValueFinished();
       void instrPopupActivated(QAction*);
-      void songChanged(int flags);
+      void songChanged(MusECore::SongChangedFlags_t flags);
       void changeAutomation(QAction*);
       void changeAutomationColor(QAction*);
       void loadTrackDrummap(MusECore::MidiTrack*, const char* filename=NULL);
diff --git a/muse2/muse/cliplist/cliplist.cpp b/muse2/muse/cliplist/cliplist.cpp
index f32fabbc..8a711b61 100644
--- a/muse2/muse/cliplist/cliplist.cpp
+++ b/muse2/muse/cliplist/cliplist.cpp
@@ -146,7 +146,7 @@ ClipListEdit::ClipListEdit(QWidget* parent)
       connect(editor->view, SIGNAL(itemSelectionChanged()), SLOT(clipSelectionChanged()));
       connect(editor->view, SIGNAL(itemClicked(QTreeWidgetItem*, int)), SLOT(clicked(QTreeWidgetItem*, int)));
 
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
       connect(editor->start, SIGNAL(valueChanged(const MusECore::Pos&)), SLOT(startChanged(const MusECore::Pos&)));
       connect(editor->len, SIGNAL(valueChanged(const MusECore::Pos&)), SLOT(lenChanged(const MusECore::Pos&)));
 
@@ -186,7 +186,7 @@ void ClipListEdit::closeEvent(QCloseEvent* e)
 //   songChanged
 //---------------------------------------------------------
 
-void ClipListEdit::songChanged(int type)
+void ClipListEdit::songChanged(MusECore::SongChangedFlags_t type)
       {
       // Is it simply a midi controller value adjustment? Forget it.
       if(type == SC_MIDI_CONTROLLER)
diff --git a/muse2/muse/cliplist/cliplist.h b/muse2/muse/cliplist/cliplist.h
index 0972df97..4d182a27 100644
--- a/muse2/muse/cliplist/cliplist.h
+++ b/muse2/muse/cliplist/cliplist.h
@@ -24,6 +24,7 @@
 #ifndef __CLIPLIST_H__
 #define __CLIPLIST_H__
 
+#include "type_defs.h"
 #include "../cobject.h"
 #include "event.h"
 
@@ -66,7 +67,7 @@ class ClipListEdit : public TopWin {
       void updateList();
 
    private slots:
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
       void startChanged(const MusECore::Pos&);
       void lenChanged(const MusECore::Pos&);
       void clipSelectionChanged();
diff --git a/muse2/muse/confmport.cpp b/muse2/muse/confmport.cpp
index 2281f134..cd5c95e9 100644
--- a/muse2/muse/confmport.cpp
+++ b/muse2/muse/confmport.cpp
@@ -1107,7 +1107,7 @@ MPConfig::MPConfig(QWidget* parent)
          this, SLOT(rbClicked(QTableWidgetItem*)));
       connect(mdevView, SIGNAL(itemChanged(QTableWidgetItem*)),
          this, SLOT(mdevViewItemRenamed(QTableWidgetItem*)));
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
 
       connect(synthList, SIGNAL(itemSelectionChanged()), SLOT(selectionChanged()));
       connect(instanceList, SIGNAL(itemSelectionChanged()), SLOT(selectionChanged()));
@@ -1138,7 +1138,7 @@ void MPConfig::selectionChanged()
 //   songChanged
 //---------------------------------------------------------
 
-void MPConfig::songChanged(int flags)
+void MPConfig::songChanged(MusECore::SongChangedFlags_t flags)
       {
       if(!(flags & (SC_CONFIG | SC_TRACK_INSERTED | SC_TRACK_REMOVED | SC_TRACK_MODIFIED)))
         return;
diff --git a/muse2/muse/confmport.h b/muse2/muse/confmport.h
index ce23fd24..04147090 100644
--- a/muse2/muse/confmport.h
+++ b/muse2/muse/confmport.h
@@ -28,6 +28,7 @@
 #include <QToolTip>
 
 #include "ui_synthconfigbase.h"
+#include "type_defs.h"
 
 class QTreeWidget;
 class QTableWidget;
@@ -61,7 +62,7 @@ class MPConfig : public QDialog, Ui::SynthConfigBase {
    private slots:
       void rbClicked(QTableWidgetItem*);
       void mdevViewItemRenamed(QTableWidgetItem*);
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
       void selectionChanged();
       void addInstanceClicked();
       void removeInstanceClicked();
diff --git a/muse2/muse/ctrl/ctrlcanvas.cpp b/muse2/muse/ctrl/ctrlcanvas.cpp
index b1e8753c..8d4bc8a3 100644
--- a/muse2/muse/ctrl/ctrlcanvas.cpp
+++ b/muse2/muse/ctrl/ctrlcanvas.cpp
@@ -216,7 +216,7 @@ CtrlCanvas::CtrlCanvas(MidiEditor* e, QWidget* parent, int xmag,
       if (!editor->parts()->empty())
             setCurTrackAndPart();
 
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
       connect(MusEGlobal::muse, SIGNAL(configChanged()), SLOT(configChanged()));
       
       setCurDrumPitch(editor->curDrumInstrument());
@@ -440,7 +440,7 @@ void CtrlCanvas::configChanged()
 //    all marked parts are added to the internal event list
 //---------------------------------------------------------
 
-void CtrlCanvas::songChanged(int type)
+void CtrlCanvas::songChanged(MusECore::SongChangedFlags_t type)
 {
   if(editor->deleting())  // Ignore while while deleting to prevent crash.
     return; 
diff --git a/muse2/muse/ctrl/ctrlcanvas.h b/muse2/muse/ctrl/ctrlcanvas.h
index 8e107789..e38edc22 100644
--- a/muse2/muse/ctrl/ctrlcanvas.h
+++ b/muse2/muse/ctrl/ctrlcanvas.h
@@ -26,6 +26,7 @@
 #include <list>
 
 
+#include "type_defs.h"
 #include "view.h"
 #include "tools.h"
 #include "midictrl.h"
@@ -168,7 +169,7 @@ class CtrlCanvas : public MusEGui::View {
       void updateSelections();
       
    private slots:
-      void songChanged(int type);
+      void songChanged(MusECore::SongChangedFlags_t type);
       void configChanged();    
       void setCurDrumPitch(int);
 
diff --git a/muse2/muse/instruments/midictrledit.cpp b/muse2/muse/instruments/midictrledit.cpp
index 03aa2f76..f4c74e9a 100644
--- a/muse2/muse/instruments/midictrledit.cpp
+++ b/muse2/muse/instruments/midictrledit.cpp
@@ -132,14 +132,14 @@ MidiControllerEditDialog::MidiControllerEditDialog(QWidget* parent, const char*
       updateViewController();
       _modified = false;
       buttonApply->setEnabled(false);
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
       }
 
 //---------------------------------------------------------
 //   songChanged
 //---------------------------------------------------------
 
-void MidiControllerEditDialog::songChanged(int flags)
+void MidiControllerEditDialog::songChanged(MusECore::SongChangedFlags_t flags)
 {
   // Is it simply a midi controller value adjustment? Forget it.
   if(flags == SC_MIDI_CONTROLLER)
diff --git a/muse2/muse/instruments/midictrledit.h b/muse2/muse/instruments/midictrledit.h
index 308302b1..a4d9501c 100644
--- a/muse2/muse/instruments/midictrledit.h
+++ b/muse2/muse/instruments/midictrledit.h
@@ -24,6 +24,7 @@
 #ifndef __MIDICTRLEDIT_H__
 #define __MIDICTRLEDIT_H__
 
+#include "type_defs.h"
 #include "ccontrolbase.h"
 #include "midictrl.h"
 
@@ -59,7 +60,7 @@ class MidiControllerEditDialog : public MidiControllerEditDialogBase {
       void minChanged(int);
       void maxChanged(int);
       void portChanged(int);
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
 
    public:
       MidiControllerEditDialog(QWidget* parent = 0, const char* name = 0, bool modal = false, Qt::WFlags fl = 0);
diff --git a/muse2/muse/liste/listedit.cpp b/muse2/muse/liste/listedit.cpp
index 62b2004d..d6bf894a 100644
--- a/muse2/muse/liste/listedit.cpp
+++ b/muse2/muse/liste/listedit.cpp
@@ -194,7 +194,7 @@ void ListEdit::closeEvent(QCloseEvent* e)
 //   songChanged
 //---------------------------------------------------------
 
-void ListEdit::songChanged(int type)
+void ListEdit::songChanged(MusECore::SongChangedFlags_t type)
       {
       if(_isDeleting)  // Ignore while while deleting to prevent crash.
         return;
@@ -588,7 +588,7 @@ ListEdit::ListEdit(MusECore::PartList* pl)
       mainGrid->setRowStretch(1, 100);
       mainGrid->setColumnStretch(0, 100);
       mainGrid->addWidget(liste, 1, 0, 2, 1);
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
 
       if(pl->empty())
       {
diff --git a/muse2/muse/liste/listedit.h b/muse2/muse/liste/listedit.h
index d9cdac96..472ba7b8 100644
--- a/muse2/muse/liste/listedit.h
+++ b/muse2/muse/liste/listedit.h
@@ -23,6 +23,7 @@
 #ifndef __LIST_EDIT_H__
 #define __LIST_EDIT_H__
 
+#include "type_defs.h"
 #include "midieditor.h"
 #include "noteinfo.h"
 #include "cobject.h"
@@ -83,7 +84,7 @@ class ListEdit : public MidiEditor {
       void configChanged();
 
    public slots:
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
       void focusCanvas();
 
    signals:
diff --git a/muse2/muse/marker/markerview.cpp b/muse2/muse/marker/markerview.cpp
index 037c0ff3..5a5f9a2a 100644
--- a/muse2/muse/marker/markerview.cpp
+++ b/muse2/muse/marker/markerview.cpp
@@ -271,7 +271,7 @@ MarkerView::MarkerView(QWidget* parent)
       //    Rest
       //---------------------------------------------------
 
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
       
       updateList();
 
@@ -411,7 +411,7 @@ void MarkerView::deleteMarker()
 //   songChanged
 //---------------------------------------------------------
 
-void MarkerView::songChanged(int flags)
+void MarkerView::songChanged(MusECore::SongChangedFlags_t flags)
 {
   // Is it simply a midi controller value adjustment? Forget it.
   if(flags == SC_MIDI_CONTROLLER)
diff --git a/muse2/muse/marker/markerview.h b/muse2/muse/marker/markerview.h
index 3da98b31..16e36767 100644
--- a/muse2/muse/marker/markerview.h
+++ b/muse2/muse/marker/markerview.h
@@ -23,6 +23,7 @@
 #ifndef __MARKERVIEW_H__
 #define __MARKERVIEW_H__
 
+#include "type_defs.h"
 #include "cobject.h"
 
 #include <QTreeWidgetItem>
@@ -91,7 +92,7 @@ class MarkerView : public TopWin {
       void markerChanged(int);
       void clicked(QTreeWidgetItem*);
       void updateList();
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
       
    signals:
       void isDeleting(MusEGui::TopWin*);
diff --git a/muse2/muse/master/lmaster.cpp b/muse2/muse/master/lmaster.cpp
index 23c39bc7..44dbf1e1 100644
--- a/muse2/muse/master/lmaster.cpp
+++ b/muse2/muse/master/lmaster.cpp
@@ -132,7 +132,7 @@ void LMaster::closeEvent(QCloseEvent* e)
 //   songChanged
 //---------------------------------------------------------
 
-void LMaster::songChanged(int type)
+void LMaster::songChanged(MusECore::SongChangedFlags_t type)
       {
       if(_isDeleting)  // Ignore while while deleting to prevent crash.
         return;
@@ -267,7 +267,7 @@ LMaster::LMaster()
       connect(view, SIGNAL(currentItemChanged(QTreeWidgetItem*, QTreeWidgetItem*)), SLOT(select(QTreeWidgetItem*, QTreeWidgetItem*)));
       connect(view, SIGNAL(itemPressed(QTreeWidgetItem*, int)), SLOT(itemPressed(QTreeWidgetItem*, int)));
       connect(view, SIGNAL(itemDoubleClicked(QTreeWidgetItem*, int)), SLOT(itemDoubleClicked(QTreeWidgetItem*)));
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
       connect(this, SIGNAL(seekTo(int)), MusEGlobal::song, SLOT(seekTo(int)));
       connect(tempoButton, SIGNAL(clicked()), SLOT(tempoButtonClicked()));
       connect(timeSigButton, SIGNAL(clicked()), SLOT(timeSigButtonClicked()));
diff --git a/muse2/muse/master/lmaster.h b/muse2/muse/master/lmaster.h
index d3278333..52c75c49 100644
--- a/muse2/muse/master/lmaster.h
+++ b/muse2/muse/master/lmaster.h
@@ -23,6 +23,7 @@
 #ifndef __LMASTER_EDIT_H__
 #define __LMASTER_EDIT_H__
 
+#include "type_defs.h"
 #include "midieditor.h"
 #include "noteinfo.h"
 #include "cobject.h"
@@ -165,7 +166,7 @@ class LMaster : public MidiEditor {
       void comboboxTimerSlot();
 
    public slots:
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
       void configChanged();
       void focusCanvas();
 
diff --git a/muse2/muse/master/master.cpp b/muse2/muse/master/master.cpp
index 9f692465..76d22a2f 100644
--- a/muse2/muse/master/master.cpp
+++ b/muse2/muse/master/master.cpp
@@ -60,14 +60,14 @@ Master::Master(MidiEditor* e, QWidget* parent, int xmag, int ymag)
       setFocusPolicy(Qt::StrongFocus);  
       setMouseTracking(true);
       connect(MusEGlobal::song, SIGNAL(posChanged(int, unsigned, bool)), this, SLOT(setPos(int, unsigned, bool)));
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), this, SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), this, SLOT(songChanged(MusECore::SongChangedFlags_t)));
       }
 
 //---------------------------------------------------------
 //   songChanged
 //---------------------------------------------------------
 
-void Master::songChanged(int type)
+void Master::songChanged(MusECore::SongChangedFlags_t type)
 {
   //if(_isDeleting) return; // todo: If things get complicated don't forget some mechanism to ignore while while deleting to prevent possible crash.
   
diff --git a/muse2/muse/master/master.h b/muse2/muse/master/master.h
index 70667f6a..37991a7f 100644
--- a/muse2/muse/master/master.h
+++ b/muse2/muse/master/master.h
@@ -24,6 +24,7 @@
 #ifndef __MASTER_H__
 #define __MASTER_H__
 
+#include "type_defs.h"
 #include "view.h"
 #include "song.h"
 #include "tools.h"
@@ -69,7 +70,7 @@ class Master : public MusEGui::View {
       void deleteVal(int x1, int x2);
 
    private slots:
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
      
    signals:
       void followEvent(int);
diff --git a/muse2/muse/master/masteredit.cpp b/muse2/muse/master/masteredit.cpp
index 68ba5168..14a6a35d 100644
--- a/muse2/muse/master/masteredit.cpp
+++ b/muse2/muse/master/masteredit.cpp
@@ -71,7 +71,7 @@ void MasterEdit::closeEvent(QCloseEvent* e)
 //   songChanged
 //---------------------------------------------------------
 
-void MasterEdit::songChanged(int type)
+void MasterEdit::songChanged(MusECore::SongChangedFlags_t type)
       {
       if(_isDeleting)  // Ignore while while deleting to prevent crash.
         return;
@@ -246,7 +246,7 @@ MasterEdit::MasterEdit()
 
       connect(tscale, SIGNAL(tempoChanged(int)), SLOT(setTempo(int)));
       connect(canvas, SIGNAL(tempoChanged(int)), SLOT(setTempo(int)));
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
       connect(MusEGlobal::song, SIGNAL(posChanged(int,unsigned,bool)), SLOT(posChanged(int,unsigned,bool)));
 
       connect(canvas, SIGNAL(followEvent(int)), hscroll, SLOT(setOffset(int)));
diff --git a/muse2/muse/master/masteredit.h b/muse2/muse/master/masteredit.h
index 15b5a649..5d98cabe 100644
--- a/muse2/muse/master/masteredit.h
+++ b/muse2/muse/master/masteredit.h
@@ -26,6 +26,7 @@
 #include <QByteArray>
 #include <QResizeEvent>
 
+#include "type_defs.h"
 #include "midieditor.h"
 #include "noteinfo.h"
 #include "cobject.h"
@@ -89,7 +90,7 @@ class MasterEdit : public MidiEditor {
       void tempoChange(double);
 
    public slots:
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
       void focusCanvas();
 
    signals:
diff --git a/muse2/muse/midiedit/dcanvas.cpp b/muse2/muse/midiedit/dcanvas.cpp
index e06fd40a..42eda0fd 100644
--- a/muse2/muse/midiedit/dcanvas.cpp
+++ b/muse2/muse/midiedit/dcanvas.cpp
@@ -1670,7 +1670,7 @@ void DrumCanvas::rebuildOurDrumMap()
       emit ourDrumMapChanged(false);
     
     if (need_update)
-      MusEGlobal::song->update(SC_DRUMMAP, 0, true); // i know, this causes a recursion, which possibly
+      MusEGlobal::song->update(SC_DRUMMAP, true); // i know, this causes a recursion, which possibly
                                                   // isn't the most elegant solution here. but it will
                                                   // never be an infinite recursion
   }
diff --git a/muse2/muse/midiedit/dlist.cpp b/muse2/muse/midiedit/dlist.cpp
index e099ecc9..a77fb810 100644
--- a/muse2/muse/midiedit/dlist.cpp
+++ b/muse2/muse/midiedit/dlist.cpp
@@ -969,7 +969,7 @@ void DList::tracklistChanged()
 //   songChanged
 //---------------------------------------------------------
 
-void DList::songChanged(int flags)
+void DList::songChanged(MusECore::SongChangedFlags_t flags)
       {
       if (flags & SC_DRUMMAP) {
             redraw();
diff --git a/muse2/muse/midiedit/dlist.h b/muse2/muse/midiedit/dlist.h
index 517ac722..b4c757e8 100644
--- a/muse2/muse/midiedit/dlist.h
+++ b/muse2/muse/midiedit/dlist.h
@@ -26,6 +26,7 @@
 #include <QKeyEvent>
 #include <QLineEdit>
 
+#include "type_defs.h"
 #include "awl/pitchedit.h"
 #include "view.h"
 
@@ -157,7 +158,7 @@ class DList : public View {
 
    public slots:
       void tracklistChanged();
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
       void ourDrumMapChanged(bool);
    
    public:
diff --git a/muse2/muse/midiedit/drumedit.cpp b/muse2/muse/midiedit/drumedit.cpp
index 196e7ffc..dc403d33 100644
--- a/muse2/muse/midiedit/drumedit.cpp
+++ b/muse2/muse/midiedit/drumedit.cpp
@@ -562,8 +562,8 @@ DrumEdit::DrumEdit(MusECore::PartList* pl, QWidget* parent, const char* name, un
       connect(canvas, SIGNAL(verticalScroll(unsigned)), vscroll, SLOT(setPos(unsigned)));
       connect(canvas,  SIGNAL(horizontalScroll(unsigned)),hscroll, SLOT(setPos(unsigned)));
       connect(canvas,  SIGNAL(horizontalScrollNoLimit(unsigned)),hscroll, SLOT(setPosNoLimit(unsigned))); 
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged1(int)));
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)),      dlist, SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged1(MusECore::SongChangedFlags_t)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)),      dlist, SLOT(songChanged(MusECore::SongChangedFlags_t)));
       connect(vscroll, SIGNAL(scrollChanged(int)), canvas, SLOT(setYPos(int)));
       connect(vscroll, SIGNAL(scaleChanged(int)),  canvas, SLOT(setYMag(int)));
       connect(vscroll, SIGNAL(scaleChanged(int)),  dlist, SLOT(setYMag(int)));
@@ -632,7 +632,7 @@ DrumEdit::DrumEdit(MusECore::PartList* pl, QWidget* parent, const char* name, un
 //   songChanged1
 //---------------------------------------------------------
 
-void DrumEdit::songChanged1(int bits)
+void DrumEdit::songChanged1(MusECore::SongChangedFlags_t bits)
       {
         if(_isDeleting)  // Ignore while deleting to prevent crash.
           return;
diff --git a/muse2/muse/midiedit/drumedit.h b/muse2/muse/midiedit/drumedit.h
index 7704b283..7ebf2fd9 100644
--- a/muse2/muse/midiedit/drumedit.h
+++ b/muse2/muse/midiedit/drumedit.h
@@ -26,6 +26,7 @@
 #include <QByteArray>
 
 #include <limits.h>
+#include "type_defs.h"
 #include "midieditor.h"
 #include "noteinfo.h"
 #include "cobject.h"
@@ -144,7 +145,7 @@ class DrumEdit : public MidiEditor {
       void follow(int);
       void newCanvasWidth(int);
       void configChanged();
-      void songChanged1(int);
+      void songChanged1(MusECore::SongChangedFlags_t);
       void setStep(QString);
 
       void updateGroupingActions();
diff --git a/muse2/muse/midiedit/ecanvas.cpp b/muse2/muse/midiedit/ecanvas.cpp
index 88cf3318..6907c014 100644
--- a/muse2/muse/midiedit/ecanvas.cpp
+++ b/muse2/muse/midiedit/ecanvas.cpp
@@ -143,7 +143,7 @@ void EventCanvas::updateSelection()
 //   songChanged(type)
 //---------------------------------------------------------
 
-void EventCanvas::songChanged(int flags)
+void EventCanvas::songChanged(MusECore::SongChangedFlags_t flags)
       {
       // Is it simply a midi controller value adjustment? Forget it.
       if(flags == SC_MIDI_CONTROLLER)
diff --git a/muse2/muse/midiedit/ecanvas.h b/muse2/muse/midiedit/ecanvas.h
index 454ae3fa..7847e88a 100644
--- a/muse2/muse/midiedit/ecanvas.h
+++ b/muse2/muse/midiedit/ecanvas.h
@@ -23,6 +23,7 @@
 #ifndef __ECANVAS_H__
 #define __ECANVAS_H__
 
+#include "type_defs.h"
 #include "canvas.h"
 #include "noteinfo.h"
 #include <QEvent>
@@ -97,7 +98,7 @@ class EventCanvas : public Canvas {
       bool midiin() const     { return _midiin; }
       bool steprec() const    { return _steprec; }
       QString getCaption() const;
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
       void range(int* s, int* e) const { *s = start_tick; *e = end_tick; }
       void playEvents(bool flag) { _playEvents = flag; }
       void selectAtTick(unsigned int tick);
diff --git a/muse2/muse/midiedit/pianoroll.cpp b/muse2/muse/midiedit/pianoroll.cpp
index 7fce2e30..9ede827e 100644
--- a/muse2/muse/midiedit/pianoroll.cpp
+++ b/muse2/muse/midiedit/pianoroll.cpp
@@ -442,7 +442,7 @@ PianoRoll::PianoRoll(MusECore::PartList* pl, QWidget* parent, const char* name,
       vscroll->setPos(KH * 30);
       info->setEnabled(false);
 
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged1(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged1(MusECore::SongChangedFlags_t)));
 
       setWindowTitle(canvas->getCaption());
       
@@ -492,7 +492,7 @@ PianoRoll::PianoRoll(MusECore::PartList* pl, QWidget* parent, const char* name,
 //   songChanged1
 //---------------------------------------------------------
 
-void PianoRoll::songChanged1(int bits)
+void PianoRoll::songChanged1(MusECore::SongChangedFlags_t bits)
       {
         if(_isDeleting)  // Ignore while while deleting to prevent crash.
           return;
diff --git a/muse2/muse/midiedit/pianoroll.h b/muse2/muse/midiedit/pianoroll.h
index 8040dc7b..9c699724 100644
--- a/muse2/muse/midiedit/pianoroll.h
+++ b/muse2/muse/midiedit/pianoroll.h
@@ -29,6 +29,7 @@
 #include <QKeyEvent>
 
 #include <limits.h>
+#include "type_defs.h"
 #include "noteinfo.h"
 #include "cobject.h"
 #include "midieditor.h"
@@ -164,7 +165,7 @@ class PianoRoll : public MidiEditor {
       void setSpeaker(bool);
       void setTime(unsigned);
       void follow(int pos);
-      void songChanged1(int);
+      void songChanged1(MusECore::SongChangedFlags_t);
       void configChanged();
       void newCanvasWidth(int);
       void toggleTrackInfo();
diff --git a/muse2/muse/midiedit/scoreedit.cpp b/muse2/muse/midiedit/scoreedit.cpp
index 8a252d74..8f4b9d3c 100644
--- a/muse2/muse/midiedit/scoreedit.cpp
+++ b/muse2/muse/midiedit/scoreedit.cpp
@@ -212,7 +212,7 @@ ScoreEdit::ScoreEdit(QWidget* parent, const char* name, unsigned initPos)
 	connect(score_canvas, SIGNAL(canvas_height_changed(int)), SLOT(canvas_height_changed(int)));
 	connect(score_canvas, SIGNAL(viewport_height_changed(int)), SLOT(viewport_height_changed(int)));
 
-	connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), score_canvas, SLOT(song_changed(int)));
+	connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), score_canvas, SLOT(song_changed(MusECore::SongChangedFlags_t)));
 
 	connect(xscroll, SIGNAL(valueChanged(int)), time_bar, SLOT(set_xpos(int)));
 	connect(score_canvas, SIGNAL(pos_add_changed()), time_bar, SLOT(pos_add_changed()));
@@ -518,7 +518,7 @@ ScoreEdit::ScoreEdit(QWidget* parent, const char* name, unsigned initPos)
 	clipboard_changed();
 	selection_changed();
 
-	connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(song_changed(int)));	
+	connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(song_changed(MusECore::SongChangedFlags_t)));	
 	connect(MusEGlobal::song, SIGNAL(newPartsCreated(const std::map< MusECore::Part*, std::set<MusECore::Part*> >&)), score_canvas, SLOT(add_new_parts(const std::map< MusECore::Part*, std::set<MusECore::Part*> >&)));	
 
 	score_canvas->fully_recalculate();
@@ -646,7 +646,7 @@ void ScoreEdit::quant_combobox_changed(int idx)
 	focusCanvas();
 }
 
-void ScoreEdit::song_changed(int flags)
+void ScoreEdit::song_changed(MusECore::SongChangedFlags_t flags)
 {
 	if(_isDeleting)  // Ignore while while deleting to prevent crash.
 		return;
@@ -1535,7 +1535,7 @@ void ScoreCanvas::fully_recalculate()
 	song_changed(SC_EVENT_MODIFIED);
 }
 
-void ScoreCanvas::song_changed(int flags)
+void ScoreCanvas::song_changed(MusECore::SongChangedFlags_t flags)
 {
 	if(parent && parent->deleting())  // Ignore while while deleting to prevent crash.
 		return;
diff --git a/muse2/muse/midiedit/scoreedit.h b/muse2/muse/midiedit/scoreedit.h
index 09720505..3b413660 100644
--- a/muse2/muse/midiedit/scoreedit.h
+++ b/muse2/muse/midiedit/scoreedit.h
@@ -40,6 +40,7 @@
 #include <QToolButton>
 
 #include <limits.h>
+#include "type_defs.h"
 #include "noteinfo.h"
 #include "cobject.h"
 #include "event.h"
@@ -196,7 +197,7 @@ class ScoreEdit : public TopWin
 		void viewport_width_changed(int);
 		void canvas_height_changed(int);
 		void viewport_height_changed(int);
-		void song_changed(int);
+		void song_changed(MusECore::SongChangedFlags_t);
 		void focusCanvas();
 		
 	public:
@@ -794,7 +795,7 @@ class ScoreCanvas : public MusEGui::View
 	public slots:
 		void x_scroll_event(int);
 		void y_scroll_event(int);
-		void song_changed(int);
+		void song_changed(MusECore::SongChangedFlags_t);
 		void fully_recalculate();
 		void goto_tick(int,bool);
 		void pos_changed(int i, unsigned u, bool b);
diff --git a/muse2/muse/midieditor.cpp b/muse2/muse/midieditor.cpp
index 86a5044a..b4830c21 100644
--- a/muse2/muse/midieditor.cpp
+++ b/muse2/muse/midieditor.cpp
@@ -179,7 +179,7 @@ void MidiEditor::writeStatus(int level, MusECore::Xml& xml) const
 //   songChanged
 //---------------------------------------------------------
 
-void MidiEditor::songChanged(int type)
+void MidiEditor::songChanged(MusECore::SongChangedFlags_t type)
       {
       
       if (type) {
diff --git a/muse2/muse/midieditor.h b/muse2/muse/midieditor.h
index 9a215a03..fd6d255b 100644
--- a/muse2/muse/midieditor.h
+++ b/muse2/muse/midieditor.h
@@ -23,6 +23,7 @@
 #ifndef __MIDIEDITOR_H__
 #define __MIDIEDITOR_H__
 
+#include "type_defs.h"
 #include "al/sig.h"
 #include "cobject.h"
 
@@ -78,7 +79,7 @@ class MidiEditor : public TopWin  {
       void addNewParts(const std::map< MusECore::Part*, std::set<MusECore::Part*> >&);
 
    public slots:
-      void songChanged(int type);
+      void songChanged(MusECore::SongChangedFlags_t type);
       void setCurDrumInstrument(int instr);
       void horizontalZoomIn();
       void horizontalZoomOut();
diff --git a/muse2/muse/miditransform.cpp b/muse2/muse/miditransform.cpp
index 4692e5d9..bd8dea27 100644
--- a/muse2/muse/miditransform.cpp
+++ b/muse2/muse/miditransform.cpp
@@ -421,7 +421,7 @@ MidiTransformerDialog::MidiTransformerDialog(QDialog* parent, Qt::WFlags fl)
       //---------------------------------------------------
 
       updatePresetList();
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
       }
 
 //---------------------------------------------------------
@@ -437,7 +437,7 @@ MidiTransformerDialog::~MidiTransformerDialog()
 //   songChanged
 //---------------------------------------------------------
 
-void MidiTransformerDialog::songChanged(int flags)
+void MidiTransformerDialog::songChanged(MusECore::SongChangedFlags_t flags)
 {
   // Whenever a song is loaded, flags is -1. Since transforms are part of configuration, 
   //  use SC_CONFIG here, to filter unwanted song change events.
@@ -920,7 +920,7 @@ bool MidiTransformerDialog::isSelected(MusECore::Event& event, MusECore::MidiPar
 
 void MidiTransformerDialog::apply()
       {
-      int flags = 0;
+      MusECore::SongChangedFlags_t flags = 0;
       MusEGlobal::song->startUndo();
       MusEGlobal::audio->msgIdle(true);
       bool copyExtract = (data->cmt->funcOp == MusECore::Copy)
diff --git a/muse2/muse/miditransform.h b/muse2/muse/miditransform.h
index 690bd868..2ed366bf 100644
--- a/muse2/muse/miditransform.h
+++ b/muse2/muse/miditransform.h
@@ -25,6 +25,7 @@
 #define __MIDITRANSFORM_H__
 
 #include "ui_transformbase.h"
+#include "type_defs.h"
 
 class QListWidgetItem;
 class QDialog;
@@ -117,7 +118,7 @@ class MidiTransformerDialog : public QDialog, public Ui::MidiTransformDialogBase
       void insideLoopChanged(bool);
 
    public slots:
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
 
    public:
       MidiTransformerDialog(QDialog* parent = 0, Qt::WFlags fl = 0);
diff --git a/muse2/muse/mixer/amixer.cpp b/muse2/muse/mixer/amixer.cpp
index 1dd09c4f..fbdc4d30 100644
--- a/muse2/muse/mixer/amixer.cpp
+++ b/muse2/muse/mixer/amixer.cpp
@@ -238,7 +238,7 @@ AudioMixerApp::AudioMixerApp(QWidget* parent, MusEGlobal::MixerConfig* c)
       connect(view, SIGNAL(layoutRequest()), SLOT(setSizing()));  
       ///connect(this, SIGNAL(layoutRequest()), SLOT(setSizing()));  
       
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
       connect(MusEGlobal::muse, SIGNAL(configChanged()), SLOT(configChanged()));
       
       //MusEGlobal::song->update();  // calls update mixer
@@ -554,7 +554,7 @@ void AudioMixerApp::configChanged()
 //   songChanged
 //---------------------------------------------------------
 
-void AudioMixerApp::songChanged(int flags)
+void AudioMixerApp::songChanged(MusECore::SongChangedFlags_t flags)
       {
       // Is it simply a midi controller value adjustment? Forget it.
       if(flags == SC_MIDI_CONTROLLER)
diff --git a/muse2/muse/mixer/amixer.h b/muse2/muse/mixer/amixer.h
index e1c70ca3..4a45d214 100644
--- a/muse2/muse/mixer/amixer.h
+++ b/muse2/muse/mixer/amixer.h
@@ -26,6 +26,7 @@
 
 #include <QScrollArea>
 
+#include "type_defs.h"
 #include "cobject.h"
 #include "synth.h"
 #include "node.h"
@@ -123,7 +124,7 @@ class AudioMixerApp : public QMainWindow {
       //void layoutRequest();
 
    private slots:
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
       //void configChanged()    { songChanged(-1); }
       void configChanged();
       //void addNewTrack(QAction*);
diff --git a/muse2/muse/mixer/astrip.cpp b/muse2/muse/mixer/astrip.cpp
index 3b0a8707..49954a0c 100644
--- a/muse2/muse/mixer/astrip.cpp
+++ b/muse2/muse/mixer/astrip.cpp
@@ -170,7 +170,7 @@ void AudioStrip::updateRouteButtons()
 //   songChanged
 //---------------------------------------------------------
 
-void AudioStrip::songChanged(int val)
+void AudioStrip::songChanged(MusECore::SongChangedFlags_t val)
       {
       // Is it simply a midi controller value adjustment? Forget it.
       if (val == SC_MIDI_CONTROLLER)
diff --git a/muse2/muse/mixer/astrip.h b/muse2/muse/mixer/astrip.h
index c0df5360..f995ce5e 100644
--- a/muse2/muse/mixer/astrip.h
+++ b/muse2/muse/mixer/astrip.h
@@ -27,6 +27,7 @@
 
 #include <vector>
 
+#include "type_defs.h"
 #include "strip.h"
 //#include "route.h"
 
@@ -111,7 +112,7 @@ class AudioStrip : public Strip {
 
    public slots:
       virtual void configChanged();
-      virtual void songChanged(int);
+      virtual void songChanged(MusECore::SongChangedFlags_t);
 
    public:
       AudioStrip(QWidget* parent, MusECore::AudioTrack*);
diff --git a/muse2/muse/mixer/mstrip.cpp b/muse2/muse/mixer/mstrip.cpp
index 6f98ffb8..f8e7b7f3 100644
--- a/muse2/muse/mixer/mstrip.cpp
+++ b/muse2/muse/mixer/mstrip.cpp
@@ -459,7 +459,7 @@ void MidiStrip::configChanged()
 //   songChanged
 //---------------------------------------------------------
 
-void MidiStrip::songChanged(int val)
+void MidiStrip::songChanged(MusECore::SongChangedFlags_t val)
       {
       if (mute && (val & SC_MUTE)) {      // mute && off
             mute->blockSignals(true);
diff --git a/muse2/muse/mixer/mstrip.h b/muse2/muse/mixer/mstrip.h
index d5bf5a9f..2a400799 100644
--- a/muse2/muse/mixer/mstrip.h
+++ b/muse2/muse/mixer/mstrip.h
@@ -25,6 +25,7 @@
 #ifndef __MSTRIP_H__
 #define __MSTRIP_H__
 
+#include "type_defs.h"
 #include "strip.h"
 #include <QLabel>
 
@@ -89,7 +90,7 @@ class MidiStrip : public Strip {
       virtual void heartBeat();
 
    public slots:
-      virtual void songChanged(int);
+      virtual void songChanged(MusECore::SongChangedFlags_t);
       virtual void configChanged();
 
    public:
diff --git a/muse2/muse/mixer/rack.cpp b/muse2/muse/mixer/rack.cpp
index 8b5bc716..f7a6d899 100644
--- a/muse2/muse/mixer/rack.cpp
+++ b/muse2/muse/mixer/rack.cpp
@@ -174,7 +174,7 @@ EffectRack::EffectRack(QWidget* parent, MusECore::AudioTrack* t)
 
       connect(this, SIGNAL(itemDoubleClicked(QListWidgetItem*)),
          this, SLOT(doubleClicked(QListWidgetItem*)));
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
 
       EffectRackDelegate* er_delegate = new EffectRackDelegate(this, track);
       setItemDelegate(er_delegate);
@@ -207,7 +207,7 @@ EffectRack::~EffectRack()
 //   songChanged
 //---------------------------------------------------------
 
-void EffectRack::songChanged(int typ)
+void EffectRack::songChanged(MusECore::SongChangedFlags_t typ)
       {
       if (typ & (SC_ROUTE | SC_RACK)) {
             updateContents();
diff --git a/muse2/muse/mixer/rack.h b/muse2/muse/mixer/rack.h
index 49905f48..4c93b05e 100644
--- a/muse2/muse/mixer/rack.h
+++ b/muse2/muse/mixer/rack.h
@@ -25,6 +25,7 @@
 #define __RACK_H__
 
 #include <QListWidget>
+#include "type_defs.h"
 
 class QDragEnterEvent;
 class QDragLeaveEvent;
@@ -62,7 +63,7 @@ class EffectRack : public QListWidget {
    private slots:
       void menuRequested(QListWidgetItem*);
       void doubleClicked(QListWidgetItem*);
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
       void updateContents();
 
    protected:
diff --git a/muse2/muse/mixer/routedialog.cpp b/muse2/muse/mixer/routedialog.cpp
index 2d73a6c0..c0eba948 100644
--- a/muse2/muse/mixer/routedialog.cpp
+++ b/muse2/muse/mixer/routedialog.cpp
@@ -47,7 +47,7 @@ RouteDialog::RouteDialog(QWidget* parent)
       connect(newDstList, SIGNAL(itemSelectionChanged()), SLOT(dstSelectionChanged()));
       connect(removeButton, SIGNAL(clicked()), SLOT(removeRoute()));
       connect(connectButton, SIGNAL(clicked()), SLOT(addRoute()));
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
       routingChanged();
       }
 
@@ -118,7 +118,7 @@ void RouteDialog::routingChanged()
 //   songChanged
 //---------------------------------------------------------
 
-void RouteDialog::songChanged(int v)
+void RouteDialog::songChanged(MusECore::SongChangedFlags_t v)
       {
       if (v & (SC_TRACK_INSERTED | SC_TRACK_REMOVED | SC_ROUTE)) {
             routingChanged();
diff --git a/muse2/muse/mixer/routedialog.h b/muse2/muse/mixer/routedialog.h
index 4d1856e5..8fab5e36 100644
--- a/muse2/muse/mixer/routedialog.h
+++ b/muse2/muse/mixer/routedialog.h
@@ -25,6 +25,8 @@
 #define __ROUTEDIALOG_H__
 
 #include "ui_routedialogbase.h"
+#include "type_defs.h"
+
 
 class QCloseEvent;
 class QDialog;
@@ -47,7 +49,7 @@ class RouteDialog : public QDialog, public Ui::RouteDialogBase {
       void addRoute();
       void srcSelectionChanged();
       void dstSelectionChanged();
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
 
    signals:
       void closed();
diff --git a/muse2/muse/mixer/strip.h b/muse2/muse/mixer/strip.h
index 5e788484..bf446013 100644
--- a/muse2/muse/mixer/strip.h
+++ b/muse2/muse/mixer/strip.h
@@ -31,6 +31,7 @@
 #include <QGridLayout>
 #include <QLabel>
 
+#include "type_defs.h"
 #include "globaldefs.h"
 //#include "route.h"
 
@@ -86,7 +87,7 @@ class Strip : public QFrame {
 
    public slots:
       void resetPeaks();
-      virtual void songChanged(int) = 0;
+      virtual void songChanged(MusECore::SongChangedFlags_t) = 0;
       virtual void configChanged() = 0;
 
    public:
diff --git a/muse2/muse/mplugins/midiitransform.cpp b/muse2/muse/mplugins/midiitransform.cpp
index 232c6f99..4be99f9d 100644
--- a/muse2/muse/mplugins/midiitransform.cpp
+++ b/muse2/muse/mplugins/midiitransform.cpp
@@ -918,14 +918,14 @@ MidiInputTransformDialog::MidiInputTransformDialog(QDialog* parent, Qt::WFlags f
       updatePresetList();
       presetList->setCurrentItem(presetList->item(0));
       presetChanged(presetList->item(0));
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
       }
 
 //---------------------------------------------------------
 //   songChanged
 //---------------------------------------------------------
 
-void MidiInputTransformDialog::songChanged(int flags)
+void MidiInputTransformDialog::songChanged(MusECore::SongChangedFlags_t flags)
 {
   // Whenever a song is loaded, flags is -1. Since transforms are part of configuration, 
   //  use SC_CONFIG here, to filter unwanted song change events.
diff --git a/muse2/muse/mplugins/midiitransform.h b/muse2/muse/mplugins/midiitransform.h
index 8c21e068..30dabd13 100644
--- a/muse2/muse/mplugins/midiitransform.h
+++ b/muse2/muse/mplugins/midiitransform.h
@@ -27,6 +27,7 @@
 #include "ui_itransformbase.h"
 
 #include <QCloseEvent>
+#include "type_defs.h"
 
 class QButtonGroup;
 class Xml;
@@ -114,7 +115,7 @@ class MidiInputTransformDialog : public QDialog, public Ui::MidiInputTransformDi
       void procChannelValbChanged(int);
 
    public slots:
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
 
    public:
       MidiInputTransformDialog(QDialog* parent = 0, Qt::WFlags fl = 0);
diff --git a/muse2/muse/song.cpp b/muse2/muse/song.cpp
index b738c795..9781116f 100644
--- a/muse2/muse/song.cpp
+++ b/muse2/muse/song.cpp
@@ -524,7 +524,7 @@ void Song::duplicateTracks()
     --trackno;
   }
   
-  int update_flags = SC_TRACK_INSERTED;
+  MusECore::SongChangedFlags_t update_flags = SC_TRACK_INSERTED;
   if(flags & (Track::ASSIGN_ROUTES | Track::ASSIGN_DEFAULT_ROUTES))
     update_flags |= SC_ROUTE;
   MusEGlobal::song->endUndo(update_flags);
@@ -1370,22 +1370,17 @@ void Song::rewindStart()
 //   update
 //---------------------------------------------------------
 
-void Song::update(int flags, int flags2, bool allowRecursion)
+void Song::update(MusECore::SongChangedFlags_t flags, bool allowRecursion)
       {
-      // HACK: If flags is -1, it is very highly likely the caller wanted flags2 = -1 as well.
-      //       Highly improbable someone only wanted all 32 flags set and not flags2.
-      if(flags == -1)
-        flags2 = -1;
-      
       static int level = 0;         // DEBUG
       if (level && !allowRecursion) {
-            printf("THIS SHOULD NEVER HAPPEN: unallowed recursion in Song::update(%08x %08x), level %d!\n"
+            printf("THIS SHOULD NEVER HAPPEN: unallowed recursion in Song::update(%08x), level %d!\n"
                    "                          the songChanged() signal is NOT emitted. this will\n"
-                   "                          probably cause windows being not up-to-date.\n", flags, flags2, level);
+                   "                          probably cause windows being not up-to-date.\n", flags, level);
             return;
             }
       ++level;
-      emit songChanged(flags, flags2);
+      emit songChanged(flags);
       --level;
       }
 
@@ -1779,11 +1774,11 @@ void Song::rescanAlsaPorts()
 
 void Song::endMsgCmd()
       {
-      if (updateFlags || updateFlags2) {
+      if (updateFlags) {
             redoList->clearDelete();
             MusEGlobal::undoAction->setEnabled(true);
             MusEGlobal::redoAction->setEnabled(false);
-            emit songChanged(updateFlags, updateFlags2);
+            emit songChanged(updateFlags);
             }
       }
 
@@ -1794,7 +1789,6 @@ void Song::endMsgCmd()
 void Song::undo()
       {
       updateFlags = 0;
-      updateFlags2 = 0;
       if (doUndo1())
             return;
       MusEGlobal::audio->msgUndo();
@@ -1805,7 +1799,7 @@ void Song::undo()
       if(updateFlags && (SC_TRACK_REMOVED | SC_TRACK_INSERTED))
         MusEGlobal::audio->msgUpdateSoloStates();
 
-      emit songChanged(updateFlags, updateFlags2);
+      emit songChanged(updateFlags);
       }
 
 //---------------------------------------------------------
@@ -1815,7 +1809,6 @@ void Song::undo()
 void Song::redo()
       {
       updateFlags = 0;
-      updateFlags2 = 0;
       if (doRedo1())
             return;
       MusEGlobal::audio->msgRedo();
@@ -1826,7 +1819,7 @@ void Song::redo()
       if(updateFlags && (SC_TRACK_REMOVED | SC_TRACK_INSERTED))
         MusEGlobal::audio->msgUpdateSoloStates();
 
-      emit songChanged(updateFlags, updateFlags2);
+      emit songChanged(updateFlags);
       }
 
 //---------------------------------------------------------
@@ -1858,20 +1851,15 @@ void Song::processMsg(AudioMsg* msg)
                               }
                         }
                   updateFlags = SC_TRACK_MODIFIED;
-                  updateFlags2 = 0;
                   break;
             case SEQM_ADD_EVENT:
                   updateFlags = SC_EVENT_INSERTED;
-                  updateFlags2 = 0;
                   if (addEvent(msg->ev1, (MidiPart*)msg->p2)) {
                         Event ev;
                         addUndo(UndoOp(UndoOp::AddEvent, ev, msg->ev1, (Part*)msg->p2, msg->a, msg->b));
                         }
                   else
-                  {
                         updateFlags = 0;
-                        updateFlags2 = 0;
-                  }
                   if(msg->a)
                     addPortCtrlEvents(msg->ev1, (Part*)msg->p2, msg->b);
                   break;
@@ -1885,7 +1873,6 @@ void Song::processMsg(AudioMsg* msg)
                   addUndo(UndoOp(UndoOp::DeleteEvent, e, event, (Part*)part, msg->a, msg->b));
                   deleteEvent(event, part);
                   updateFlags = SC_EVENT_REMOVED;
-                  updateFlags2 = 0;
                   }
                   break;
             case SEQM_CHANGE_EVENT:
@@ -1896,7 +1883,6 @@ void Song::processMsg(AudioMsg* msg)
                     addPortCtrlEvents(msg->ev2, (Part*)msg->p3, msg->b);
                   addUndo(UndoOp(UndoOp::ModifyEvent, msg->ev2, msg->ev1, (Part*)msg->p3, msg->a, msg->b));
                   updateFlags = SC_EVENT_MODIFIED;
-                  updateFlags2 = 0;
                   break;
             
             // Moved here from MidiSeq::processMsg   p4.0.34
@@ -1923,14 +1909,12 @@ void Song::processMsg(AudioMsg* msg)
                   addUndo(UndoOp(UndoOp::AddTempo, msg->a, msg->b));
                   MusEGlobal::tempomap.addTempo(msg->a, msg->b);
                   updateFlags = SC_TEMPO;
-                  updateFlags2 = 0;
                   break;
 
             case SEQM_SET_TEMPO:
                   addUndo(UndoOp(UndoOp::AddTempo, msg->a, msg->b));
                   MusEGlobal::tempomap.setTempo(msg->a, msg->b);
                   updateFlags = SC_TEMPO;
-                  updateFlags2 = 0;
                   break;
 
             case SEQM_SET_GLOBAL_TEMPO:
@@ -1941,35 +1925,30 @@ void Song::processMsg(AudioMsg* msg)
                   addUndo(UndoOp(UndoOp::DeleteTempo, msg->a, msg->b));
                   MusEGlobal::tempomap.delTempo(msg->a);
                   updateFlags = SC_TEMPO;
-                  updateFlags2 = 0;
                   break;
 
             case SEQM_ADD_SIG:
                   addUndo(UndoOp(UndoOp::AddSig, msg->a, msg->b, msg->c));
                   AL::sigmap.add(msg->a, AL::TimeSignature(msg->b, msg->c));
                   updateFlags = SC_SIG;
-                  updateFlags2 = 0;
                   break;
 
             case SEQM_REMOVE_SIG:
                   addUndo(UndoOp(UndoOp::DeleteSig, msg->a, msg->b, msg->c));
                   AL::sigmap.del(msg->a);
                   updateFlags = SC_SIG;
-                  updateFlags2 = 0;
                   break;
 
             case SEQM_ADD_KEY:
                   addUndo(UndoOp(UndoOp::AddKey, msg->a, msg->b));
                   MusEGlobal::keymap.addKey(msg->a, (key_enum) msg->b);
                   updateFlags = SC_KEY;
-                  updateFlags2 = 0;
                   break;
 
             case SEQM_REMOVE_KEY:
                   addUndo(UndoOp(UndoOp::DeleteKey, msg->a, msg->b));
                   MusEGlobal::keymap.delKey(msg->a);
                   updateFlags = SC_KEY;
-                  updateFlags2 = 0;
                   break;
 
             default:
@@ -1987,7 +1966,6 @@ void Song::cmdAddPart(Part* part)
       addPart(part);
       addUndo(UndoOp(UndoOp::AddPart, part));
       updateFlags = SC_PART_INSERTED;
-      updateFlags2 = 0;
       }
 
 //---------------------------------------------------------
@@ -2001,7 +1979,6 @@ void Song::cmdRemovePart(Part* part)
       part->events()->incARef(-1);
       unchainClone(part);
       updateFlags = SC_PART_REMOVED;
-      updateFlags2 = 0;
       }
 
 //---------------------------------------------------------
@@ -2028,7 +2005,6 @@ void Song::cmdChangePart(Part* oldPart, Part* newPart, bool doCtrls, bool doClon
         addPortCtrlEvents(newPart, doClones);
       
       updateFlags = SC_PART_MODIFIED;
-      updateFlags2 = 0;
       }
 
 //---------------------------------------------------------
@@ -2163,7 +2139,7 @@ void Song::clear(bool signal, bool clear_all)
       if (signal) {
             emit loopChanged(false);
             recordChanged(false);
-            emit songChanged(-1, -1);  
+            emit songChanged(-1);  
             }
       }
 
diff --git a/muse2/muse/song.h b/muse2/muse/song.h
index 44d5efa6..8777fb2c 100644
--- a/muse2/muse/song.h
+++ b/muse2/muse/song.h
@@ -30,6 +30,7 @@
 #include <map>
 #include <set>
 
+#include "type_defs.h"
 #include "pos.h"
 #include "globaldefs.h"
 #include "tempo.h"
@@ -128,8 +129,7 @@ class Song : public QObject {
 
       TempoFifo _tempoFifo; // External tempo changes, processed in heartbeat.
       
-      int updateFlags;
-      int updateFlags2;  // Extra room for more flags
+      MusECore::SongChangedFlags_t updateFlags;
 
       TrackList _tracks;      // tracklist as seen by arranger
       MidiTrackList  _midis;
@@ -346,7 +346,7 @@ class Song : public QObject {
       //-----------------------------------------
 
       void startUndo();
-      void endUndo(int /*flags*/, int /*flags2*/ = 0);
+      void endUndo(MusECore::SongChangedFlags_t);
 
       void undoOp(UndoOp::UndoType type, const char* changedFile, const char* changeData, int startframe, int endframe);
 
@@ -372,7 +372,7 @@ class Song : public QObject {
       //-----------------------------------------
 
       void dumpMaster();
-      void addUpdateFlags(int f, int f2 = 0)  { updateFlags |= f; updateFlags2 |= f2; }
+      void addUpdateFlags(MusECore::SongChangedFlags_t f)  { updateFlags |= f; }
 
       //-----------------------------------------
       //   Python bridge related
@@ -386,7 +386,7 @@ class Song : public QObject {
       void seekTo(int tick);
       // use allowRecursion with care! this could lock up muse if you 
       //  aren't sure that your recursion will be finite!
-      void update(int flags = -1, int flags2 = 0, bool allowRecursion=false); 
+      void update(MusECore::SongChangedFlags_t flags = -1, bool allowRecursion=false); 
       void beat();
 
       void undo();
@@ -420,7 +420,7 @@ class Song : public QObject {
       void populateScriptMenu(QMenu* menuPlugins, QObject* receiver);
 
    signals:
-      void songChanged(int /*flags*/, int /*flags2*/ = 0); 
+      void songChanged(MusECore::SongChangedFlags_t); 
       void posChanged(int, unsigned, bool);
       void loopChanged(bool);
       void recordChanged(bool);
diff --git a/muse2/muse/trackdrummapupdater.cpp b/muse2/muse/trackdrummapupdater.cpp
index 5fce2587..2ad6a90d 100644
--- a/muse2/muse/trackdrummapupdater.cpp
+++ b/muse2/muse/trackdrummapupdater.cpp
@@ -31,10 +31,10 @@ using MusEGlobal::song;
 
 TrackDrummapUpdater::TrackDrummapUpdater()
 {
-  connect(song,SIGNAL(songChanged(int, int)), this, SLOT(songChanged(int)));
+  connect(song,SIGNAL(songChanged(MusECore::SongChangedFlags_t)), this, SLOT(songChanged(MusECore::SongChangedFlags_t)));
 }
 
-void TrackDrummapUpdater::songChanged(int flags)
+void TrackDrummapUpdater::songChanged(MusECore::SongChangedFlags_t flags)
 {
   if (flags & (SC_TRACK_INSERTED | SC_TRACK_REMOVED | SC_TRACK_MODIFIED |
                SC_PART_INSERTED  | SC_PART_REMOVED  | SC_PART_MODIFIED  |
@@ -52,7 +52,7 @@ void TrackDrummapUpdater::songChanged(int flags)
     {
       // allow recursion. there will be no more recursion, because this
       // is only executed when something other than SC_DRUMMAP happens
-      song->update(SC_DRUMMAP, 0, true); 
+      song->update(SC_DRUMMAP, true); 
     }
     
   }
diff --git a/muse2/muse/trackdrummapupdater.h b/muse2/muse/trackdrummapupdater.h
index caa2ac28..1070d780 100644
--- a/muse2/muse/trackdrummapupdater.h
+++ b/muse2/muse/trackdrummapupdater.h
@@ -25,6 +25,7 @@
 #define __TRACKDRUMMAPUPDATER_H__
 
 #include <QObject>
+#include "type_defs.h"
 
 namespace MusECore {
 
@@ -36,7 +37,7 @@ class TrackDrummapUpdater : public QObject
     TrackDrummapUpdater();
     
   private slots:
-    void songChanged(int flags);
+    void songChanged(MusECore::SongChangedFlags_t flags);
 };
 
 } //namespace MusECore
diff --git a/muse2/muse/transport.cpp b/muse2/muse/transport.cpp
index f88bed1b..051c2a71 100644
--- a/muse2/muse/transport.cpp
+++ b/muse2/muse/transport.cpp
@@ -501,7 +501,7 @@ Transport::Transport(QWidget* parent, const char* name)
       connect(tempo, SIGNAL(tempoChanged(int)), MusEGlobal::song, SLOT(setTempo(int)));
       connect(tempo, SIGNAL(sigChanged(const AL::TimeSignature&)), SLOT(sigChange(const AL::TimeSignature&)));
       connect(MusEGlobal::song, SIGNAL(playChanged(bool)), SLOT(setPlay(bool)));
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), this, SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), this, SLOT(songChanged(MusECore::SongChangedFlags_t)));
       connect(MusEGlobal::muse, SIGNAL(configChanged()), SLOT(configChanged()));
 
 
@@ -722,7 +722,7 @@ void Transport::setCycleMode(int id)
 //   songChanged
 //---------------------------------------------------------
 
-void Transport::songChanged(int flags)
+void Transport::songChanged(MusECore::SongChangedFlags_t flags)
       {
       // Is it simply a midi controller value adjustment? Forget it.
       if(flags == SC_MIDI_CONTROLLER)
diff --git a/muse2/muse/transport.h b/muse2/muse/transport.h
index 50422b66..55e991ef 100644
--- a/muse2/muse/transport.h
+++ b/muse2/muse/transport.h
@@ -24,6 +24,7 @@
 #ifndef __TRANSPORT_H__
 #define __TRANSPORT_H__
 
+#include "type_defs.h"
 #include "al/sig.h"
 
 #include <QWidget>
@@ -129,7 +130,7 @@ class Transport : public QWidget
       void rposChanged(const MusECore::Pos&);
       void setRecMode(int);
       void setCycleMode(int);
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
       void syncChanged(bool);
       void jackSyncChanged(bool);
       void setRecord(bool flag);
diff --git a/muse2/muse/type_defs.h b/muse2/muse/type_defs.h
new file mode 100644
index 00000000..92709c02
--- /dev/null
+++ b/muse2/muse/type_defs.h
@@ -0,0 +1,35 @@
+//=========================================================
+//  MusE
+//  Linux Music Editor
+//
+//  type_defs.h
+//  Copyright (C) 2012 Tim E. Real (terminator356 on users dot sourceforge dot net)
+//
+//  This program is free software; you can redistribute it and/or
+//  modify it under the terms of the GNU General Public License
+//  as published by the Free Software Foundation; version 2 of
+//  the License, or (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program; if not, write to the Free Software
+//  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+//
+//=========================================================
+
+#ifndef __TYPE_DEFS_H__
+#define __TYPE_DEFS_H__
+
+#include "stdint.h"
+
+namespace MusECore {
+
+typedef int64_t SongChangedFlags_t;
+
+}   // namespace MusECore
+
+#endif
diff --git a/muse2/muse/undo.cpp b/muse2/muse/undo.cpp
index 38582d58..45642652 100644
--- a/muse2/muse/undo.cpp
+++ b/muse2/muse/undo.cpp
@@ -217,7 +217,6 @@ void Song::startUndo()
 			
       undoList->push_back(Undo());
       updateFlags = 0;
-      updateFlags2 = 0;
       undoMode = true;
       }
 
@@ -225,10 +224,9 @@ void Song::startUndo()
 //   endUndo
 //---------------------------------------------------------
 
-void Song::endUndo(int flags, int flags2)
+void Song::endUndo(SongChangedFlags_t flags)
       {
       updateFlags |= flags;
-      updateFlags2 |= flags2;
       endMsgCmd();
       undoMode = false;
       }
@@ -399,7 +397,6 @@ void Song::doUndo2()
                   case UndoOp::ModifySongLen:
                         _len=i->b;
                         updateFlags = -1; // set all flags     // TODO Refine this! Too many flags.  // REMOVE Tim.
-                        updateFlags2 = -1; // set all flags
                         break;
                   case UndoOp::ModifyClip:
                   case UndoOp::ModifyMarker:
@@ -510,7 +507,6 @@ void Song::doRedo2()
                   case UndoOp::ModifySongLen:
                         _len=i->a;
                         updateFlags = -1; // set all flags   // TODO Refine this! Too many flags.  // REMOVE Tim.
-                        updateFlags2 = -1; // set all flags   
                         break;
                   case UndoOp::ModifyClip:
                   case UndoOp::ModifyMarker:
diff --git a/muse2/muse/waveedit/waveedit.cpp b/muse2/muse/waveedit/waveedit.cpp
index 67c46ad2..e1f18722 100644
--- a/muse2/muse/waveedit/waveedit.cpp
+++ b/muse2/muse/waveedit/waveedit.cpp
@@ -267,7 +267,7 @@ WaveEdit::WaveEdit(MusECore::PartList* pl)
       connect(view,  SIGNAL(horizontalScroll(unsigned)),hscroll, SLOT(setPos(unsigned)));
 
       connect(hscroll, SIGNAL(scaleChanged(int)),  SLOT(updateHScrollRange()));
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged1(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged1(MusECore::SongChangedFlags_t)));
 
       initShortcuts();
       
@@ -451,7 +451,7 @@ void WaveEdit::readStatus(MusECore::Xml& xml)
 //    signal from "song"
 //---------------------------------------------------------
 
-void WaveEdit::songChanged1(int bits)
+void WaveEdit::songChanged1(MusECore::SongChangedFlags_t bits)
       {
         if(_isDeleting)  // Ignore while while deleting to prevent crash.
           return;
diff --git a/muse2/muse/waveedit/waveedit.h b/muse2/muse/waveedit/waveedit.h
index b2617f49..d52eb986 100644
--- a/muse2/muse/waveedit/waveedit.h
+++ b/muse2/muse/waveedit/waveedit.h
@@ -31,6 +31,7 @@
 #include <QCloseEvent>
 #include <QByteArray>
 
+#include "type_defs.h"
 #include "midieditor.h"
 
 class QAction;
@@ -80,7 +81,7 @@ class WaveEdit : public MidiEditor {
    private slots:
       void cmd(int);
       void setTime(unsigned t);
-      void songChanged1(int);
+      void songChanged1(MusECore::SongChangedFlags_t);
       void soloChanged(bool flag);
       void moveVerticalSlider(int val);
 
diff --git a/muse2/muse/waveedit/waveview.cpp b/muse2/muse/waveedit/waveview.cpp
index 1af1d83a..df579a43 100644
--- a/muse2/muse/waveedit/waveview.cpp
+++ b/muse2/muse/waveedit/waveview.cpp
@@ -79,7 +79,7 @@ WaveView::WaveView(MidiEditor* pr, QWidget* parent, int xscale, int yscale)
 
 
       connect(MusEGlobal::song, SIGNAL(posChanged(int,unsigned,bool)), SLOT(setPos(int,unsigned,bool)));
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
       songChanged(SC_SELECTION);
       }
 
@@ -254,7 +254,7 @@ QString WaveView::getCaption() const
 //   songChanged
 //---------------------------------------------------------
 
-void WaveView::songChanged(int flags)
+void WaveView::songChanged(MusECore::SongChangedFlags_t flags)
       {
       // Is it simply a midi controller value adjustment? Forget it.
       if(flags == SC_MIDI_CONTROLLER)
diff --git a/muse2/muse/waveedit/waveview.h b/muse2/muse/waveedit/waveview.h
index a3fcf9c5..6aa55120 100644
--- a/muse2/muse/waveedit/waveview.h
+++ b/muse2/muse/waveedit/waveview.h
@@ -23,6 +23,7 @@
 #ifndef WAVE_VIEW_H
 #define WAVE_VIEW_H
 
+#include "type_defs.h"
 #include "view.h"
 #include <QWidget>
 #include <QMouseEvent>
@@ -105,7 +106,7 @@ class WaveView : public View {
 
    public slots:
       void setYScale(int);
-      void songChanged(int type);
+      void songChanged(MusECore::SongChangedFlags_t type);
 
    signals:
       void followEvent(int);
diff --git a/muse2/muse/widgets/comment.cpp b/muse2/muse/widgets/comment.cpp
index ea08c5b3..bb0ce033 100644
--- a/muse2/muse/widgets/comment.cpp
+++ b/muse2/muse/widgets/comment.cpp
@@ -57,7 +57,7 @@ TrackComment::TrackComment(MusECore::Track* t, QWidget* parent)
       setAttribute(Qt::WA_DeleteOnClose);
       setWindowTitle(tr("MusE: Track Comment"));
       track = t;
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
       textentry->setText(track->comment());
       textentry->moveCursor(QTextCursor::End);
       connect(textentry, SIGNAL(textChanged()), SLOT(textChanged()));
@@ -69,7 +69,7 @@ TrackComment::TrackComment(MusECore::Track* t, QWidget* parent)
 //   songChanged
 //---------------------------------------------------------
 
-void TrackComment::songChanged(int flags)
+void TrackComment::songChanged(MusECore::SongChangedFlags_t flags)
       {
       if ((flags & (SC_TRACK_INSERTED|SC_TRACK_REMOVED|SC_TRACK_MODIFIED)) == 0)
             return;
diff --git a/muse2/muse/widgets/comment.h b/muse2/muse/widgets/comment.h
index f06757d2..9f71cb47 100644
--- a/muse2/muse/widgets/comment.h
+++ b/muse2/muse/widgets/comment.h
@@ -24,6 +24,7 @@
 #define __COMMENT_H__
 
 #include "ui_commentbase.h"
+#include "type_defs.h"
 
 class QWidget;
 
@@ -66,7 +67,7 @@ class TrackComment : public Comment {
       virtual void setText(const QString& s);
 
    private slots:
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
 
    public:
       TrackComment(MusECore::Track*, QWidget*);
diff --git a/muse2/muse/widgets/midisyncimpl.cpp b/muse2/muse/widgets/midisyncimpl.cpp
index 44d3ca04..fb20cff9 100644
--- a/muse2/muse/widgets/midisyncimpl.cpp
+++ b/muse2/muse/widgets/midisyncimpl.cpp
@@ -262,7 +262,7 @@ MidiSyncConfig::MidiSyncConfig(QWidget* parent)
       connect(syncDelaySpinBox, SIGNAL(valueChanged(int)), SLOT(syncChanged()));
   
       // Done in show().
-      //connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      //connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
       //connect(MusEGlobal::heartBeatTimer, SIGNAL(timeout()), SLOT(heartBeat()));
 }
 
@@ -274,7 +274,7 @@ MidiSyncConfig::~MidiSyncConfig()
 //   songChanged
 //---------------------------------------------------------
 
-void MidiSyncConfig::songChanged(int flags)
+void MidiSyncConfig::songChanged(MusECore::SongChangedFlags_t flags)
 {
       // Is it simply a midi controller value adjustment? Forget it. Otherwise, it's mainly midi port/device changes we want.
       if(flags == SC_MIDI_CONTROLLER || 
@@ -578,7 +578,7 @@ void MidiSyncConfig::cancel()
 void MidiSyncConfig::show()
 {
   songChanged(-1);
-  connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+  connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
   connect(MusEGlobal::heartBeatTimer, SIGNAL(timeout()), SLOT(heartBeat()));
   QDialog::show();
 }
@@ -607,7 +607,7 @@ void MidiSyncConfig::closeEvent(QCloseEvent* e)
       }
       
       disconnect(MusEGlobal::heartBeatTimer, SIGNAL(timeout()), this, SLOT(heartBeat()));
-      disconnect(MusEGlobal::song, SIGNAL(songChanged(int, int)), this, SLOT(songChanged(int)));
+      disconnect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), this, SLOT(songChanged(MusECore::SongChangedFlags_t)));
       
       e->accept();
       }
diff --git a/muse2/muse/widgets/midisyncimpl.h b/muse2/muse/widgets/midisyncimpl.h
index 9c22b55f..6801b510 100644
--- a/muse2/muse/widgets/midisyncimpl.h
+++ b/muse2/muse/widgets/midisyncimpl.h
@@ -25,6 +25,7 @@
 #define __MIDISYNCIMPL_H__
 
 #include "ui_midisync.h"
+#include "type_defs.h"
 #include "sync.h"
 
 class QCloseEvent;
@@ -119,7 +120,7 @@ class MidiSyncConfig : public QDialog, public Ui::MidiSyncConfigBase {
       void dlvClicked(QTreeWidgetItem*, int);
       void dlvDoubleClicked(QTreeWidgetItem*, int);
       //void renameOk(QListViewItem*, int, const QString&);
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
 
    public:
       MidiSyncConfig(QWidget* parent=0);
diff --git a/muse2/muse/widgets/mtrackinfo.cpp b/muse2/muse/widgets/mtrackinfo.cpp
index fc28f5d2..1b98f100 100644
--- a/muse2/muse/widgets/mtrackinfo.cpp
+++ b/muse2/muse/widgets/mtrackinfo.cpp
@@ -265,7 +265,7 @@ MidiTrackInfo::MidiTrackInfo(QWidget* parent, MusECore::Track* sel_track) : QWid
   //oRButton->setVisible(false);
   connect(oRButton, SIGNAL(pressed()), SLOT(outRoutesPressed()));
   
-  connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+  connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
   connect(MusEGlobal::muse, SIGNAL(configChanged()), SLOT(configChanged()));
   
   connect(MusEGlobal::heartBeatTimer, SIGNAL(timeout()), SLOT(heartBeat()));
@@ -594,7 +594,7 @@ void MidiTrackInfo::configChanged()
 //   songChanged
 //---------------------------------------------------------
 
-void MidiTrackInfo::songChanged(int type)
+void MidiTrackInfo::songChanged(MusECore::SongChangedFlags_t type)
 {
   // Is it simply a midi controller value adjustment? Forget it.
   if(type == SC_MIDI_CONTROLLER)
@@ -1368,7 +1368,7 @@ void MidiTrackInfo::iPanDoubleClicked()
 //   updateTrackInfo
 //---------------------------------------------------------
 
-void MidiTrackInfo::updateTrackInfo(int flags)
+void MidiTrackInfo::updateTrackInfo(MusECore::SongChangedFlags_t flags)
 {
       // Is it simply a midi controller value adjustment? Forget it.
       if(flags == SC_MIDI_CONTROLLER)
diff --git a/muse2/muse/widgets/mtrackinfo.h b/muse2/muse/widgets/mtrackinfo.h
index a38dcf20..fd21f066 100644
--- a/muse2/muse/widgets/mtrackinfo.h
+++ b/muse2/muse/widgets/mtrackinfo.h
@@ -24,6 +24,7 @@
 #define __MTRACKINFO_H__
 
 #include "ui_mtrackinfobase.h"
+#include "type_defs.h"
 
 namespace MusECore {
 class Track;
@@ -78,7 +79,7 @@ class MidiTrackInfo : public QWidget, public Ui::MidiTrackInfoBase
    public slots:
       void setTrack(MusECore::Track*); 
       void configChanged();
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
    
    signals:
       void returnPressed();
@@ -89,7 +90,7 @@ class MidiTrackInfo : public QWidget, public Ui::MidiTrackInfoBase
       MusECore::Track* track() const { return selected; }
       void setLabelText();
       void setLabelFont();
-      void updateTrackInfo(int);
+      void updateTrackInfo(MusECore::SongChangedFlags_t);
 };
 
 } // namespace MusEGui
diff --git a/muse2/muse/widgets/mtscale.cpp b/muse2/muse/widgets/mtscale.cpp
index f0e5ba8d..00947f6f 100644
--- a/muse2/muse/widgets/mtscale.cpp
+++ b/muse2/muse/widgets/mtscale.cpp
@@ -58,7 +58,7 @@ MTScale::MTScale(int* r, QWidget* parent, int xs, bool _mode)
       button = Qt::NoButton;
       setMouseTracking(true);
       connect(MusEGlobal::song, SIGNAL(posChanged(int, unsigned, bool)), SLOT(setPos(int, unsigned, bool)));
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
       connect(MusEGlobal::song, SIGNAL(markerChanged(int)), SLOT(redraw()));
 	
       setFixedHeight(28);
@@ -69,7 +69,7 @@ MTScale::MTScale(int* r, QWidget* parent, int xs, bool _mode)
 //   songChanged
 //---------------------------------------------------------
 
-void MTScale::songChanged(int type)
+void MTScale::songChanged(MusECore::SongChangedFlags_t type)
       {
       if (type & (SC_SIG|SC_TEMPO)) {
            if ((type & SC_TEMPO) && waveMode) {
diff --git a/muse2/muse/widgets/mtscale.h b/muse2/muse/widgets/mtscale.h
index a505c832..4f76dcc2 100644
--- a/muse2/muse/widgets/mtscale.h
+++ b/muse2/muse/widgets/mtscale.h
@@ -23,6 +23,7 @@
 #ifndef __MTSCALE_H__
 #define __MTSCALE_H__
 
+#include "type_defs.h"
 #include "view.h"
 
 
@@ -42,7 +43,7 @@ class MTScale : public View {
       bool waveMode;
 
    private slots:
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
 
    protected:
       virtual void pdraw(QPainter&, const QRect&);
diff --git a/muse2/muse/widgets/mtscale_flo.cpp b/muse2/muse/widgets/mtscale_flo.cpp
index 787d9030..9eb0253a 100644
--- a/muse2/muse/widgets/mtscale_flo.cpp
+++ b/muse2/muse/widgets/mtscale_flo.cpp
@@ -51,7 +51,7 @@ MTScaleFlo::MTScaleFlo(ScoreCanvas* parent_editor, QWidget* parent_widget)
       button = Qt::NoButton;
       setMouseTracking(true);
       connect(MusEGlobal::song, SIGNAL(posChanged(int, unsigned, bool)), SLOT(setPos(int, unsigned, bool)));
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
       connect(MusEGlobal::song, SIGNAL(markerChanged(int)), SLOT(redraw()));
       
       parent=parent_editor;
@@ -64,7 +64,7 @@ MTScaleFlo::MTScaleFlo(ScoreCanvas* parent_editor, QWidget* parent_widget)
 //   songChanged
 //---------------------------------------------------------
 
-void MTScaleFlo::songChanged(int type)
+void MTScaleFlo::songChanged(MusECore::SongChangedFlags_t type)
       {
       if (type & (SC_SIG|SC_TEMPO))
             redraw();
diff --git a/muse2/muse/widgets/mtscale_flo.h b/muse2/muse/widgets/mtscale_flo.h
index 9a0b414e..4b089f5e 100644
--- a/muse2/muse/widgets/mtscale_flo.h
+++ b/muse2/muse/widgets/mtscale_flo.h
@@ -23,6 +23,7 @@
 #ifndef __MTSCALE_FLO_H__
 #define __MTSCALE_FLO_H__
 
+#include "type_defs.h"
 #include "view.h"
 
 
@@ -44,7 +45,7 @@ class MTScaleFlo : public View {
       int xoffset;
 
    private slots:
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
 
    protected:
       virtual void draw(QPainter&, const QRect&);
diff --git a/muse2/muse/widgets/routepopup.cpp b/muse2/muse/widgets/routepopup.cpp
index 84b98d79..f3390298 100644
--- a/muse2/muse/widgets/routepopup.cpp
+++ b/muse2/muse/widgets/routepopup.cpp
@@ -737,10 +737,10 @@ RoutePopupMenu::RoutePopupMenu(const QString& title, QWidget* parent, MusECore::
 void RoutePopupMenu::init()
 {
   //printf("RoutePopupMenu::init this:%p\n", this);  
-  connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+  connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
 }
 
-void RoutePopupMenu::songChanged(int val)
+void RoutePopupMenu::songChanged(MusECore::SongChangedFlags_t val)
 {
   if(val & (SC_ROUTE | SC_CHANNELS | SC_CONFIG))     
     updateRouteMenus();             
diff --git a/muse2/muse/widgets/routepopup.h b/muse2/muse/widgets/routepopup.h
index e4ecde4c..b379842b 100644
--- a/muse2/muse/widgets/routepopup.h
+++ b/muse2/muse/widgets/routepopup.h
@@ -24,6 +24,7 @@
 #define __ROUTEPOPUPMENU_H__
 
 //#include <QObject>
+#include "type_defs.h"
 #include "popupmenu.h"
 
 namespace MusECore {
@@ -67,7 +68,7 @@ class RoutePopupMenu : public PopupMenu
     
   private slots:
     void popupActivated(QAction*);
-    void songChanged(int);
+    void songChanged(MusECore::SongChangedFlags_t);
   
   public:
     RoutePopupMenu(QWidget* parent = 0, MusECore::Track* track = 0, bool isOutput = false);
diff --git a/muse2/muse/widgets/sig_tempo_toolbar.cpp b/muse2/muse/widgets/sig_tempo_toolbar.cpp
index 22296df2..ecc3ace6 100644
--- a/muse2/muse/widgets/sig_tempo_toolbar.cpp
+++ b/muse2/muse/widgets/sig_tempo_toolbar.cpp
@@ -46,7 +46,7 @@ namespace MusEGui
 		layout->addWidget(label);
 		layout->addWidget(tempo_edit);
 		
-		connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), this, SLOT(song_changed(int)));
+		connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), this, SLOT(song_changed(MusECore::SongChangedFlags_t)));
 		connect(MusEGlobal::song, SIGNAL(posChanged(int, unsigned, bool)), this, SLOT(pos_changed(int,unsigned,bool)));
 		
 		connect(tempo_edit, SIGNAL(tempoChanged(double)), MusEGlobal::song, SLOT(setTempo(double)));
@@ -61,7 +61,7 @@ namespace MusEGui
 		song_changed(SC_TEMPO);
 	}
 
-	void TempoToolbarWidget::song_changed(int type)
+	void TempoToolbarWidget::song_changed(MusECore::SongChangedFlags_t type)
 	{
 		if (type & SC_TEMPO)
 		{
@@ -92,7 +92,7 @@ namespace MusEGui
 		layout->addWidget(label);
 		layout->addWidget(sig_edit);
 		
-		connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), this, SLOT(song_changed(int)));
+		connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), this, SLOT(song_changed(MusECore::SongChangedFlags_t)));
 		connect(MusEGlobal::song, SIGNAL(posChanged(int, unsigned, bool)), this, SLOT(pos_changed(int,unsigned,bool)));
 		
 		connect(sig_edit, SIGNAL(valueChanged(const AL::TimeSignature&)), MusEGlobal::song, SLOT(setSig(const AL::TimeSignature&)));
@@ -107,7 +107,7 @@ namespace MusEGui
 		song_changed(SC_SIG);
 	}
 	
-	void SigToolbarWidget::song_changed(int type)
+	void SigToolbarWidget::song_changed(MusECore::SongChangedFlags_t type)
 	{
 		if (type & SC_SIG)
 		{
diff --git a/muse2/muse/widgets/sig_tempo_toolbar.h b/muse2/muse/widgets/sig_tempo_toolbar.h
index b3fd2088..51271d30 100644
--- a/muse2/muse/widgets/sig_tempo_toolbar.h
+++ b/muse2/muse/widgets/sig_tempo_toolbar.h
@@ -24,6 +24,7 @@
 #define __SIG_TEMPO_TOOLBAR_H__
 
 #include <QWidget>
+#include "type_defs.h"
 
 namespace Awl
 {
@@ -55,7 +56,7 @@ namespace MusEGui
 		
 		private slots:
 			void pos_changed(int,unsigned,bool);
-			void song_changed(int);
+			void song_changed(MusECore::SongChangedFlags_t);
   };
 
 	class TempoToolbarWidget : public QWidget
@@ -76,7 +77,7 @@ namespace MusEGui
 			
 		private slots:
 			void pos_changed(int,unsigned,bool);
-			void song_changed(int);
+			void song_changed(MusECore::SongChangedFlags_t);
   };
 }
 
diff --git a/muse2/muse/widgets/songpos_toolbar.cpp b/muse2/muse/widgets/songpos_toolbar.cpp
index ef87f378..ff52a4ad 100644
--- a/muse2/muse/widgets/songpos_toolbar.cpp
+++ b/muse2/muse/widgets/songpos_toolbar.cpp
@@ -33,12 +33,14 @@ namespace MusEGui
 	{
 		_raster=0;
 		setSizePolicy(QSizePolicy::Expanding, QSizePolicy::Fixed);
-		connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), this, SLOT(song_changed(int)));
+		connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), this, SLOT(song_changed(MusECore::SongChangedFlags_t)));
 		song_changed(0);
 	}
 	
-	void SongPosToolbarWidget::song_changed(int)
+	void SongPosToolbarWidget::song_changed(MusECore::SongChangedFlags_t flags)
 	{
+          if(flags & SC_MIDI_CONTROLLER)  // TODO: Filter more stuff out
+            return;
 		if (width()!=0)
 			setXMag(-(MusEGlobal::song->len()/width()));
 	}
diff --git a/muse2/muse/widgets/songpos_toolbar.h b/muse2/muse/widgets/songpos_toolbar.h
index 063b2ffd..02f0501c 100644
--- a/muse2/muse/widgets/songpos_toolbar.h
+++ b/muse2/muse/widgets/songpos_toolbar.h
@@ -23,6 +23,7 @@
 #ifndef __SONGPOS_TOOLBAR_H__
 #define __SONGPOS_TOOLBAR_H__
 
+#include "type_defs.h"
 #include "mtscale.h"
 
 namespace MusEGui
@@ -43,7 +44,7 @@ namespace MusEGui
 			virtual void resizeEvent(QResizeEvent*);
 		
 		private slots:
-			void song_changed(int);
+			void song_changed(MusECore::SongChangedFlags_t);
 		
 	};
 }
diff --git a/muse2/muse/widgets/wtscale.cpp b/muse2/muse/widgets/wtscale.cpp
index b41e7b83..bf5106b2 100644
--- a/muse2/muse/widgets/wtscale.cpp
+++ b/muse2/muse/widgets/wtscale.cpp
@@ -54,7 +54,7 @@ WTScale::WTScale(int* r, QWidget* parent, int xs)
       button = Qt::NoButton;
       setMouseTracking(true);
       connect(MusEGlobal::song, SIGNAL(posChanged(int, unsigned, bool)), SLOT(setPos(int, unsigned, bool)));
-      connect(MusEGlobal::song, SIGNAL(songChanged(int, int)), SLOT(songChanged(int)));
+      connect(MusEGlobal::song, SIGNAL(songChanged(MusECore::SongChangedFlags_t)), SLOT(songChanged(MusECore::SongChangedFlags_t)));
       connect(MusEGlobal::song, SIGNAL(markerChanged(int)), SLOT(redraw()));
       setFixedHeight(28);
       setBg(QColor(0xe0, 0xe0, 0xe0));
@@ -64,7 +64,7 @@ WTScale::WTScale(int* r, QWidget* parent, int xs)
 //   songChanged
 //---------------------------------------------------------
 
-void WTScale::songChanged(int /*type*/)
+void WTScale::songChanged(MusECore::SongChangedFlags_t /*type*/)
       {
       }
 
diff --git a/muse2/muse/widgets/wtscale.h b/muse2/muse/widgets/wtscale.h
index 1999a91f..989daf29 100644
--- a/muse2/muse/widgets/wtscale.h
+++ b/muse2/muse/widgets/wtscale.h
@@ -23,6 +23,7 @@
 #ifndef __MTSCALE_H__
 #define __MTSCALE_H__
 
+#include "type_defs.h"
 #include "view.h"
 
 namespace MusEGui {
@@ -40,7 +41,7 @@ class WTScale : public View {
       bool barLocator;
 
    private slots:
-      void songChanged(int);
+      void songChanged(MusECore::SongChangedFlags_t);
 
    protected:
       virtual void pdraw(QPainter&, const QRect&);