// IAudioMixerViewModelCallback
public void SetVolume(EarTrumpetAudioSessionModel item, float volume)
{
_service.SetAudioSessionVolume(item.SessionId, volume);
}
public void SetMute(EarTrumpetAudioSessionModel item, bool isMuted)
{
_service.SetAudioSessionMute(item.SessionId, isMuted);
}