void OnTrackBarTimerElapsed(object sender, ElapsedEventArgs e)
{
_trackBarValue = _audioPlayback.GetCurrentPosition();
RaisePropertyChanged("TrackBarValue");
TimeSpan current = TimeSpan.FromSeconds(_trackBarValue);
TrackBarString = $"{current.ToString(@"hh\:mm\:ss")} / {_trackBarMaximumValue.ToString(@"hh\:mm\:ss")}";
}