I havent used this live yet, but playing with it and getting ready for this weekends gigs, Ive already learned to love this. Create your lists on the iPod app and it automatically reads them. Trim tracks, auto start, and stopping after the track ends are the highlights of this app. One thing I would add is the option to create a metronome track so you dont have to change aps when you only need a click. You could make a click track mp3, but not something I really want to deal with. 5 stars.
Playinpearls about OneTrack - Backing Tracks for Pros