Reference Manual - 1.1.1
IFusionSoundMusicProvider   WaitStatus

Wait for playback status.

WaitStatus (
  IFusionSoundMusicProvider   * thiz,
  FSMusicProviderStatus   mask,
  unsigned int   timeout
);

This method blocks until playback reaches one of the states specified in mask or, if the specified timeout in milliseconds is non-zero, until timeout expires.