I use IOS devices (IPAD Iphone) to play my 320kb mp3 backing tracks on stage. I use BIAB and Logic Pro to create them.
I sometimes use bluetooth if its available but prefer just running a cable from the ios device to the PA/mixer/amp/speaker/etc.
I find Bluetooth implementation spotty across PA manufacturers. Some brands its good enough, other places not so much.
So for audio quality, I find the cable the most consistent.


I use Anytune Pro to handle playing back the mp3's. I can create set lists, loop, change key, tempo. etc.
I find it great for rehearsing and learning tunes also.
Anytune has bluetooth/midi implementation so you can used a midi/bluetooth pedalboard to control start/stop, next/previous, etc. This is pretty useful if you've got a guitar in your hand.
The software makes gigging with backing tracks easy.

I can easily copy my tunes and setups from one ios device to another. I usually use an ipad as i like the larger screen.
I have an iphone with the same material at the gig in case the ipad goes awol.


I've only done this for about 5 years so don't have the experience of others on this forum.
I can setup my rig in about 2 minutes and everything fits in the side pocket of a gig bag.


biab2023(Mac)
Logic Pro X