Yes, I have a folder with a couple hundred MP3s just in case the arranger keyboard were to meet it's untimely demise. But, in all the years I've been using arranger keyboards I've never had one die - not once. Consequently, the MP3s are never used. So, if that emergency ever arises, then I'll fire up the PC's MP3 player and become a DJ until the end of the job. When I get home, I'll put my backup keyboard in the case, fix the one that died, or send it to the local repair guy, who would get it back to me within a week or less.

Cheers,

Gary