just thought, if its fitted with a radio why dont you get a cheap ipod/MP3/something similiar that has a FM TRANSMITTER. (you can even buy external ones for your laptop online for about 20 quid) My nokia N97 phone has got a built in 1, then all you have to do is put your tunes onto your device, set the transmitter to say 90.00FM and then turn your radio on and tune it to that frequency to hear your tunes through your original radio. You could turn it up and down using the dash buttons but to select/skip track etc you would have to press the buttons on the ipod/similiar device. (not sure about the legality of that either). hope this helps.