Prefer FmodEx as the default audio engine if the viewer was built with it.

indra/newview/llstartup.cpp

@@ -660,17 +660,6 @@ bool idle_startup()
 		{
 			gAudiop = NULL;
 
-#ifdef LL_OPENAL
-			if (!gAudiop
-#if !LL_WINDOWS
-			    && NULL == getenv("LL_BAD_OPENAL_DRIVER")
-#endif // !LL_WINDOWS
-			    )
-			{
-				gAudiop = (LLAudioEngine *) new LLAudioEngine_OpenAL();
-			}
-#endif
-
 #ifdef LL_FMODEX		
 			if (!gAudiop
 #if !LL_WINDOWS
@@ -682,6 +671,17 @@ bool idle_startup()
 			}
 #endif
 
+#ifdef LL_OPENAL
+			if (!gAudiop
+#if !LL_WINDOWS
+			    && NULL == getenv("LL_BAD_OPENAL_DRIVER")
+#endif // !LL_WINDOWS
+			    )
+			{
+				gAudiop = (LLAudioEngine *) new LLAudioEngine_OpenAL();
+			}
+#endif
+
 #ifdef LL_FMOD			
 			if (!gAudiop
 #if !LL_WINDOWS