private void button2_Click(object sender, EventArgs e)
 {
     Debug.WriteLine("Index:");
     playlist.clear();
     listBox1.Items.Clear();
     listBox1.ClearSelected();
     media.Clear();
     button1_Click(null, null);
 }
        private void OpenMusic(object sender, EventArgs e)
        {
            playlist.clear();
            musicFolder.InitialDirectory = folder;
            WMPLib.IWMPMedia media;

            if (musicFolder.ShowDialog() == DialogResult.OK)
            {
                foreach (string file in musicFolder.FileNames)
                {
                    media = mediaPlayer.newMedia(file);
                    playlist.appendItem(media);
                }
            }
            mediaPlayer.currentPlaylist = playlist;
            mediaPlayer.Ctlcontrols.stop();
        }