Acabei de ler a materia saiu um APP chamado "Simple Background Music Player" que permite ouvir musica a partir de dispositivos USB.
http://mspoweruser.com/xbox-one-users-can-now-play-music-from-usb-in-background/
http://mspoweruser.com/xbox-one-users-can-now-play-music-from-usb-in-background/