private void Mp3Player_PlaybackStateChanged(object sender, PlaybackStateEventArgs e)
{
PlayPauseToggleButton.IsEnabled = true;
PlayPauseToggleButton.IsChecked = e.PlaybackState == PlaybackState.Playing ? true : false;
}
protected virtual void OnPlaybackStateChanged(PlaybackStateEventArgs e)
{
if (PlaybackStateChanged != null)
{
PlaybackStateChanged(this, e);
}
}