diff --git a/src/Audacity.h b/src/Audacity.h
index 4f1955602..16a5fb99b 100644
--- a/src/Audacity.h
+++ b/src/Audacity.h
@@ -26,7 +26,7 @@
 // We only do alpha builds and release versions.
 // Most of the time we're in development, so IS_ALPHA should be defined
 // to 1.
-#define IS_ALPHA 1
+#define IS_ALPHA 0
 
 // Increment as appropriate every time we release a new version.
 #define AUDACITY_VERSION   2
diff --git a/src/Mix.h b/src/Mix.h
index 90f859d67..b2fa425ec 100644
--- a/src/Mix.h
+++ b/src/Mix.h
@@ -99,6 +99,7 @@ class AUDACITY_DLL_API Mixer {
    /// Restart processing at beginning of buffer next time
    /// Process() is called.
    void Restart();
+   void Restart( double NewStart ){ mT0 = NewStart; Restart();}
 
    /// Reposition processing to absolute time next time
    /// Process() is called.
diff --git a/src/prefs/ModulePrefs.cpp b/src/prefs/ModulePrefs.cpp
index 8384acb0d..eb4aae0d9 100644
--- a/src/prefs/ModulePrefs.cpp
+++ b/src/prefs/ModulePrefs.cpp
@@ -20,6 +20,7 @@
 #include "../Audacity.h"
 
 #include <wx/defs.h>
+#include <wx/filename.h>
 
 #include "../ShuttleGui.h"