Interesting topic as I use BIAB for backing tracks of many sorts; purchased it specifically to set up and use backing tracks.

As far as using it for performance, I'm a guitarist and absolutely detest hauling a bunch of equipment around. The less the better.

If you are using BIAB for performance backing tracks, considering a loop pedal or loop station might be worthwhile. (Provided you have an amp or PA of some sort (even a small one)... the looper has to have something to plug into.)

What I do for performance:

I set up the track in BIAB however I want it, save it on the PC then load it to a track on the loop pedal. I use a Boss RC-5 loop pedal (plenty of storage room and easy to use). I can set the track to loop until I stop it or play just once and stop. If a full song, I select that saved track, press the pedal and go. If a looping track, I can create a backing track of just drums and bass for example ... well, that's getting into how loop pedals work. Also, this loop pedal's display shows me how far along I am in the track and that's most helpful.

I'm sure other loopers can do the same thing, just be sure to check the features and functions.

The loop pedal or loop station is small and easy to haul around, simple to set up and use and provides a great playback of the BIAB file.