private void ButtonStart_Click(object sender, RoutedEventArgs e)
        {
            ListFilesPage lstFilesPage = null;

            if (Settings.CurrentPageTitle.Equals("LeftPage") &&
                !Utils.IsCurrentMusic())
            {
                lstFilesPage = Settings.LeftPage as ListFilesPage;
            }

            if (Settings.CurrentPageTitle.Equals("RightPage") &&
                !Utils.IsCurrentMusic())
            {
                lstFilesPage = Settings.RightPage as ListFilesPage;
            }

            if (lstFilesPage != null)
            {
                MediaElementAudioPlayer.Source = new Uri(
                    lstFilesPage.GetBasePath() + lstFilesPage.GetCurrentSelectedFilename());

                Settings.CurrentSelectedFilename =
                    lstFilesPage.GetCurrentSelectedFilename();
                Settings.CurrentSelectedIndex =
                    lstFilesPage.GetCurrentSelectedIndex();
            }

            MediaElementAudioPlayer.Play();
            timer.Start();
        }
 private void SliderAudioPlayer_LostMouseCapture(object sender, MouseEventArgs e)
 {
     MediaElementAudioPlayer.Pause();
     MediaElementAudioPlayer.Position = TimeSpan.FromSeconds(SliderAudioPlayer.Value);
     MediaElementAudioPlayer.Play();
     IsValueChanged = false;
     IsMouseCapture = false;
 }