void process_audio (boost::weak_ptr<Content>, boost::shared_ptr<const AudioBuffers>, Time);
void setup_pieces ();
void playlist_changed ();
void content_changed (boost::weak_ptr<Content>, int);
void do_seek (Time, bool);
void process_audio (boost::weak_ptr<Content>, boost::shared_ptr<const AudioBuffers>, Time);
void setup_pieces ();
void playlist_changed ();
void content_changed (boost::weak_ptr<Content>, int);
void do_seek (Time, bool);