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.cpp

@@ -23,6 +23,7 @@ DllExport bool InitVideo()
 #endif
 
 	gst_init(NULL, NULL);
+
 	GstRegistry* registry = gst_registry_get();
 
 #if _WIN64