Really? I never heard that. That would be great.
I have just found out that the PS3 version will allow MIDI files to be imported into the recording studio in the game, and I'm currently listening to a midi file of MotR that I hope to import at some point. I don't know if there are any better midi versions, but the one I have is a good starting point.
Unfortunately there are reports that there is a 3 or 4 minute limit on custom made songs and a note limit round about 1000 - 1200 notes, so it would have to be an massively edited version of Monty.

That's surprising, as the MIDI import is there for people to be able to import their own songs, and almost all songs are over 3 or 4 mins (if that is the limit). MIDI files are tiny, so I don't know why the limit is there.
I can get Monty down to 3:45 if I started at 2:05 into the tune (where it repeats the beginning part again), but that misses the second part of the main tune entirely, and it still might be too long for the game
I'll have to wait and see.
There are loads of other SID tunes I'd love to play, so I'm sure I'll get some use out of the custom song part.
Paul.