It's working. Had to view all tracks, hit play, turn on random.
It looks like you can skip tracks with iDrive. When you hover over next track, instead of displaying next song, it displays "random".
2013 BMW 335xi EBII over Coral Red / ///M sport / Premium / Cold Weather / 6MT / Nav / Dynamic Handling / HK audio
Previous: 2010 328i / MT
Previous: 2007 328i / AT (boo)
Previous: 2004 325i / MT