Just unlocked mine, thanks to this site :-) It also works in-car with the Dension iPod connector. I have one fitted in my Audi A2 which is hard-wired into the headunit via cd changer. Music plays fine, as you would expect, and when you want to make or when you recieve a call, the music cuts out and you can take it in your bluetooth headset, I use the Sony Ericsson HBH-PV700 , end the call and the music fades back in
