Hi all I found today that my car stereo play/pause, previous song, and next song buttons do nothing in the music app in beta 5. I connect my stereo and iPhone using bluetooth. I had the previously posted problem in beta 4 with the headphone remote not working (save volume), and I don't honestly remember if I tried music in the car over bluetooth for the week I had beta 4 (all was working fine in beta 3 and below). The headphone remote is working again now in beta 5. Anyone else?