private void deleteSongCmd()
{
List <AudioMedia> tmp = new List <AudioMedia>();
IEnumerable <AudioMedia> lm = ListSongs.Where(m => m.IsSelected == true);
foreach (AudioMedia m in lm)
{
tmp.Add(m);
}
foreach (AudioMedia m in tmp)
{
ListSongs.Remove(m);
}
saveSongs();
}