I've done a search and really haven't found any help with the issue that I'm having.
I have my iPhone connected with the standard USB cable and when I'm trying to play music, sometimes it will work and then the next time I get in the car it won't work.
When it's not working I can still see all of my playlists and songs, but when I select them to play all that shows up is "Unknown Track" and no music plays. The next time I get in the car it may or may not work again.
A few things I've tried is turning the bluetooth on and off on both the phone and the phone settings in idrive. I have also updated the software from www.bmwusa.com/update
(which I had to do when IOS 5 came out, I couldn't get any music to play at all).
I still need to try a new USB cable to see if that might be the problem and maybe try to update the software again.
Anyone else seen this?