I hear ya, but it WAS working and I just want life back to how it was.
I'm not willing to ditch the new ROM though because I regularly use telenav and the faster Rev. A speeds. Since I travel a lot in my car this is a pain. Without modding my stereo in my car which I don't want to do, if there was a way to get the music from my phone to play on my system wirelessly while at the same time allowing me to use my BT headset, that would be cool. I have a BMW and will not mod the Harmon Kardon in any way; it's a great system.
Another option would be an SD card dongle that attached to my system and allowed me to control song selection using the car radio controls, eliminating the use of my phone altogether.