i agree with simon. convert to mp3s so you can have an ipod, back up on your phone and another ipod sourced cheaply off ebay

the benefits of being able to change the song on the fly don't outweigh the horrendous risks of failure.

i found it difficult to remember which guitar patches to use on my processor playing live without a note on the music and all it takes is momentary distraction for you to get lost. on the other hand you might be more clever than me.

with a live band you can change the order of a song by talking but that flexibility is lost once AI takes over.