I could be wrong, but I believe the �Song Play� mode your referring to will never been seen on a workstation every again. It was heavily criticised when it was first seen by workstaton users as a completely pointless and amateur feature.

Don't get me wrong now, I'm not suggesting your an amateur by any stretch of the imagination. But if you consider how far superior the SNG format is and it's ability to hold 210,000 notes or 128 songs in a single file. Who on earth would want to deal with reading midi files ever again.

Regards.
James.