I too have a Belkin FM transmitter -- the model that you can plug in to the cigarette lighter. You need to tune the car radio to a station that doesn't have a signal (you only hear static). I use 89.5 and that seems to work pretty well. It isn't cd quality sound, but it is pretty good. I've found that I get better sound on the home stereo, so I assume interference while driving around the city reduces sound quality in the car...