Just echoing the sentiments in some other threads: impedance matching into the AuX input is poor. Levels are quite low and I have to have the car stereo volume really cranked just to get decent levels. Is the fuze outputing digital MP3 data to the USB port while it’s playing? Do any care stereos have a USB port for input that will process it? Anyone tried an in-line headphone amp between the sansa and the car?