Music format for bringing to audition/demo

OK I will just bring some downloaded 24bit songs on a thumb drive, just wanted to check what was common or if there's another way I should know of that's better.  

I would just bring what ever you are listening too that week. 

OK so downloading an HD track then copying it to my thumb drive will do the trick then? I am terrible with computers and want to make sure I don't need some program to convert files, I am noob at this hehe. 

A couple of years ago, or a couple and a half, I went through a few stores bringing my CDs and files on a drive. Wherever I went, except one, they had no CD Player readily available and, at that time, it was the same for USB connected files. In all places, except that lonely one, they brought me an iPad with Tidal and asked what I wanted to hear. It just happened that Tidal did not have what I wanted. In the end, I would enter and ask if they had a CD player, rather than ask to check the speakers I came in for.

The only place that was ready for CD and USB drive was.....Crutchfield.

So, nhb1, bring all you have, but expect an iPad.

Before visiting, call the store and ask what they have available for playback.