SetPlayMode
PlaybackManager::SetPlayMode(mode, continuePlaying);
virtual void SetPlayMode(int32 mode,
SetPlayMode(playMode);
SetPlayMode(MODE_PLAYING_FORWARD, !atBeginning);
SetPlayMode(MODE_PLAYING_BACKWARD, !atBeginning);
SetPlayMode(MODE_PLAYING_PAUSED_FORWARD, true);
SetPlayMode(MODE_PLAYING_PAUSED_BACKWARD, true);
SetPlayMode(-PlayMode(), !atBeginning);
virtual void SetPlayMode(int32 mode,