Do any of you live performers out there use mp3 recordings of your midi files when you play instead of a midi file through a keyboard or sound module? Just curious as to the sound and quality difference and if anyone has a personal preference. I use midi files with a Roland XP-60 for live performance but always have a problem with sound output equalization of songs (always tweaking) and I think it would be great to just normalize an mp3, stick it in a player and go! Any opinions???