private void showEditSongWindow(object sender, EventArgs e)
 {
     if (this.listView.SelectedItems.Count > 0)
     {
         Song          item = (Song)this.listView.SelectedItems[0].Tag;
         NewSongWindow win  = new NewSongWindow(this.songsContainer, item);
         win.ShowDialog();
     }
 }
        private void showAddSongWindow(object sender, EventArgs e)
        {
            NewSongWindow win = new NewSongWindow(this.songsContainer);

            win.ShowDialog();
        }