/// <summary>
        /// Handles the PlaybackCompleted event of the PlaybackManager control.
        /// </summary>
        /// <param name="sender">The source of the event.</param>
        /// <param name="e">The <see cref="PlaybackEventArgs" /> instance containing the event data.</param>
        void PlaybackManager_PlaybackCompleted(object sender, PlaybackStopEventArgs e)
        {
            if (e.Player == CurrentPlayer)
            {
                if (CurrentPositionTimer != null)
                {
                    CurrentPositionTimer.Dispose();
                }

                CurrentPlayer.PlayStateChanged -= CurrentPlayer_PlayStateChanged;
                CurrentPlayer = null;
                ResetButtonVisibilities(null);

                Dispatcher.InvokeAsync(() => TxtCurrentPosition.Text = string.Empty);
            }
        }
 /// <summary>
 /// Handles the PlaybackCompleted event of the PlaybackManager control.
 /// </summary>
 /// <param name="sender">The source of the event.</param>
 /// <param name="e">The <see cref="PlaybackEventArgs" /> instance containing the event data.</param>
 void PlaybackManager_PlaybackCompleted(object sender, PlaybackStopEventArgs e)
 {
     App.Instance.ApplicationWindow.NavigateBack();
 }
 /// <summary>
 /// Handles the PlaybackCompleted event of the PlaybackManager control.
 /// </summary>
 /// <param name="sender">The source of the event.</param>
 /// <param name="e">The <see cref="PlaybackStopEventArgs" /> instance containing the event data.</param>
 /// <exception cref="System.NotImplementedException"></exception>
 void PlaybackManager_PlaybackCompleted(object sender, PlaybackStopEventArgs e)
 {
     App.Instance.ApplicationWindow.Dispatcher.Invoke(() => NowPlayingButton.Visibility = Visibility.Collapsed);
 }