I'm almost certain the xp-80 is smf compatible. I have an xp-50 and it will play standard midi files no problem, both format 1 and 0. The xp-50 also does read and write in it's own format or smf. I'm pretty sure all you'll have to do is copy the midi file from cd onto a floppy, pop the floppy in and select the file and play it through the xp-80's sequencer.

Bob