public void CopyState(AudioManager mOtherAudioManager)
 {
     // set state to other state
     mOtherAudioManager.MuteMaster(mMuteMusic);
     mOtherAudioManager.MasterLevel(mMasterLevel);
     mOtherAudioManager.MusicLevel(mMusicLevel);
     mOtherAudioManager.SoundsLevel(mSoundsLevel);
     mOtherAudioManager.MuteMusic(mMuteMusic);
     mOtherAudioManager.MuteSounds(mMuteSounds);
 }