Sorry to harp on this, but when you rip your CDs to WAV files, where do you put the ID3 information? What set of tools do you use to do your ripping and all that?

(And, as a total aside, any hope for FLAC support on the car player? Says the FLAC FAQ: Decoding requires only integer arithmetic, and is much less compute-intensive than for most perceptual codecs. Real-time decode performance is easily achievable on even modest hardare.)