Remember AGI was first developed.. oooh way back in the day of 1982-83, which I think was before MIDI was developed (Correct me if I'm wrong). It would be nice if someone figured out a hack that could play MIDIs directly, but considering AGI's limited architecture I would have to say no. That's also the advantage of working with something like this: we have to get creative!!
P.S. Using AGS would be considered cheating!