The Qu drive, and for that matter, the USB players on any desk I’ve ever come across, have a very long way to go before they’re nearly as useful as many of the dedicated apps out there.
Check out Go Button (from the makers o QLab), Simple Board, Show One, Play Fade Pause, WeDJ (and probably many others that I don’t know about) that give many ways of organising & playing tracks. Then you can use AirPlay to an airport express & connect that to one of the ST inputs on the desk.
Tip. If you have an old iOS device, then the older version of Go Button has no limit on the number of playlists you can save with its free version (though the newer version has more options). My old iPhone 4 is stuck at iOS 7.1.2, so it sits in a dock to charge it and makes a great little playback device.
