+RESULT eServiceMP3::pause(ePtr<iPauseableService> &ptr) { ptr=this; return 0; }
+RESULT eServiceMP3::seek(ePtr<iSeekableService> &ptr) { ptr = 0; return -1; }
+
+RESULT eServiceMP3::audioTracks(ePtr<iAudioTrackSelection> &ptr) { ptr = 0; return -1; };