5 files changed, 37 insertions, 4 deletions
diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index 0e248ff88b..9aa15789ed 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -2685,7 +2685,7 @@ void LLAppViewer::handleViewerCrash()
 		gMessageSystem->stopLogging();
 	}
 
-	LLWorld::getInstance()->getInfo(gDebugInfo);
+	if (LLWorld::instanceExists()) LLWorld::getInstance()->getInfo(gDebugInfo);
 
 	// Close the debug file
 	pApp->writeDebugInfo();
@@ -4405,3 +4405,15 @@ void LLAppViewer::launchUpdater()
 	// LLAppViewer::instance()->forceQuit();
 }
 
+
+//virtual
+void LLAppViewer::setMasterSystemAudioMute(bool mute)
+{
+	gSavedSettings.setBOOL("MuteAudio", mute);
+}
+
+//virtual
+bool LLAppViewer::getMasterSystemAudioMute()
+{
+	return gSavedSettings.getBOOL("MuteAudio");
+}
diff --git a/indra/newview/llappviewer.h b/indra/newview/llappviewer.h
index 40e74061b5..a011c5ebfd 100644
--- a/indra/newview/llappviewer.h
+++ b/indra/newview/llappviewer.h
@@ -168,6 +168,10 @@ public:
 
 	void purgeCache(); // Clear the local cache. 
 	
+	// mute/unmute the system's master audio
+	virtual void setMasterSystemAudioMute(bool mute);
+	virtual bool getMasterSystemAudioMute();
+	
 protected:
 	virtual bool initWindow(); // Initialize the viewer's window.
 	virtual bool initLogging(); // Initialize log files, logging system, return false on failure.
diff --git a/indra/newview/llappviewermacosx.cpp b/indra/newview/llappviewermacosx.cpp
index 1282e437f2..cc38a0940c 100644
--- a/indra/newview/llappviewermacosx.cpp
+++ b/indra/newview/llappviewermacosx.cpp
@@ -444,6 +444,20 @@ std::string LLAppViewerMacOSX::generateSerialNumber()
 	return serial_md5;
 }
 
+//virtual
+void LLAppViewerMacOSX::setMasterSystemAudioMute(bool mute)
+{
+	// XXX TODO: make this actually set the OS's audio mute state
+	gSavedSettings.setBOOL("MuteAudio", mute);
+}
+
+//virtual
+bool LLAppViewerMacOSX::getMasterSystemAudioMute()
+{
+	// XXX TODO: make this actually get the OS's audio mute state
+	return gSavedSettings.getBOOL("MuteAudio");
+}
+
 OSErr AEGURLHandler(const AppleEvent *messagein, AppleEvent *reply, long refIn)
 {
 	OSErr result = noErr;
diff --git a/indra/newview/llappviewermacosx.h b/indra/newview/llappviewermacosx.h
index bc841fc3a7..cbf7e6c209 100644
--- a/indra/newview/llappviewermacosx.h
+++ b/indra/newview/llappviewermacosx.h
@@ -48,6 +48,9 @@ public:
 	//
 	virtual bool init();			// Override to do application initialization
 
+	// mute/unmute the system's master audio
+	virtual void setMasterSystemAudioMute(bool mute);
+	virtual bool getMasterSystemAudioMute();
 
 protected:
 	virtual bool restoreErrorTrap();
diff --git a/indra/newview/llstatusbar.cpp b/indra/newview/llstatusbar.cpp
index 8a36475510..bff32af228 100644
--- a/indra/newview/llstatusbar.cpp
+++ b/indra/newview/llstatusbar.cpp
@@ -354,7 +354,7 @@ void LLStatusBar::refresh()
 	childSetEnabled("stat_btn", net_stats_visible);
 
 	// update the master volume button state
-	BOOL mute_audio = gSavedSettings.getBOOL("MuteAudio");
+	bool mute_audio = LLAppViewer::instance()->getMasterSystemAudioMute();
 	mBtnVolume->setToggleState(mute_audio);
 }
 
@@ -523,8 +523,8 @@ void LLStatusBar::onMouseEnterVolume(LLUICtrl* ctrl)
 static void onClickVolume(void* data)
 {
 	// toggle the master mute setting
-	BOOL mute_audio = gSavedSettings.getBOOL("MuteAudio");
-	gSavedSettings.setBOOL("MuteAudio", !mute_audio);
+	bool mute_audio = LLAppViewer::instance()->getMasterSystemAudioMute();
+	LLAppViewer::instance()->setMasterSystemAudioMute(!mute_audio);	
 }
 
 // sets the static variables necessary for the date