Some cleanup in Gstreamer Audio, should be finished 100% now! Please test

Frames are now pulled in a thread for better performance. We still need to grab the right frame from the Framebuffer and we might need to switch Gstreamer's Frame stepping API.
refs #1

GstreamerHelper/GstreamerVideo.h

@@ -11,7 +11,7 @@ using namespace std;
 	static LogCallback Log;
 
 	struct ApplicationFrame {
-		guint8* buffer;
+		guint8* data;
 		int size;
 		int width;
 		int height;