You want nirvana, Dennis? If you are going to use MP3's, why not simply get a REAL guitarist and bass player (and drummer too!) to come in and PLAY the tunes. Talk about realism! It'll blow your XS away

If your chops are decent, maybe you could even TRADE recording time with them and it not cost you that much. And if they are decently prepared, you ought to get ten tunes or more out of an hour session. I know you can't program that many tunes in that time!

I think, were I to go the MP3 route, that I would want to use something that a machine COULDN'T better...