Index: OpenSceneGraph/trunk/src/osgPlugins/ffmpeg/FFmpegImageStream.hpp
===================================================================
--- OpenSceneGraph/trunk/src/osgPlugins/ffmpeg/FFmpegImageStream.hpp (revision 9816)
+++ OpenSceneGraph/trunk/src/osgPlugins/ffmpeg/FFmpegImageStream.hpp (revision 9826)
@@ -54,5 +54,6 @@
         virtual void quit(bool waitForThreadToExit = true);
 
-        void setAudioSink(osg::ref_ptr<AudioSinkInterface> audio_sink);
+        virtual void setAudioSink(osg::AudioSinkInterface* audio_sink);
+        
         void fillAudioBuffer(void * const buffer, const size_t size);