Wow, $80 for 1 midi file? isn't that a lot of money?. A friend of mine that went to Syria for a visit brought with him 10 midi files from a player over there. There were done on Roland E500 I believe. I liked them a lot, if anyone interested, I can email them the files, there are of various songs.
I've seen a software once that actually plays the midi file on a virtual keyboard for you, I thought that was pretty cool