Hi: Donny
I think that Michael Bedesem's program called Midi Player
will do this. You can change voices to XG or GM, if you need to change drum track from
9 to 10 there is another program called Midi Fix to do that. You can get these
programs free from here, if you don't already have them.
http://www.svpworld.com/psr_software.htm

I hope this is what your looking for.
Have a good Thanksgiving.
Denny