Bluetooth audio.
 

Is there an interface available that allows one to play music from the iPhone via Bluetooth in my 2005 X5 4.4. No I'm not interested in other wired interfaces whatever they might be. I would just like to play my music via Bluetooth as some of the newer cars do.....:dunno:

i am going to wire up the AUX input into the system, i already got the iLive bluetooth device that can connect to AUX, and will stream music via BT to iLive and to AUX... cost - $20 for iLive, either factory AUX cable, about $40-60, or make one yourself, parts about $5 total... prerequisite - car should have AUX ability...

I can stream music from my android phone to my Grom interface with Bluetooth that is connected to my factory audio system in my X. You need the Grom App to do that.