public static void update(Int64 playlistId, Airplay Airplay, Int32 Position, Int32 OldPosition)
{
if (Math.Abs(Position - OldPosition) < 2) { return; }
IPlaylistDao pdao = new DaoFactory().getPlaylistDao();
Playlist p = pdao.GetById(playlistId, false);
p.biDeassociateAt(OldPosition);
p.biAssociateAt(Airplay, Position);
pdao.CommitTransactionFlush();
}