Disklavier

I've been a member of this very helpful group for about a year and don't 
recall seeing any information on this subject.

I would like to take all of my midi file diskettes, including the ones 
purchased from Yamaha and load them into a laptop which would sit on the 
MX80.

Then write a program to randomly select files to be sent to the piano via 
Cakewalk or some other midi software product.

Has anyone done this?