I know that some of you use mp3's,etc in performances. Aside from break music, which is a good enough reason, how else do you use it ?

I would like to use them occasionly as vocal backup files, but I don't see a way of adjusting the pitch, or erasing the vocal track. I know there are semi-successful programs out there that have limited success on some files, depending on how it is recorded.

I can record on a SD card, and play on my KN7000 if it can be used for some good purpose.

Your thoughts would be appreciated.

Bernie