Many moons ago (something like 10 years ago), I built a car jukebox from scratch, using what is now considered stone-age technology and tools - long before iPods and small format PCs were mainstream. It still works, but it's no longer in the car: <http://oneironaut.tripod.com/>
I learnt a lot about Linux, parallel port LCD screens, inverters, 12V DC power supplies and micro-soldering (and how quickly electronics can and do fry). Not really much information there for use in your project though (maybe the power supply info). I wonder if Cajun could be rigged up to work on a mini...
There was a French guy (Rogier: firstname.lastname@example.org
) who has developed a 166 ICS interface for USB and other media - He may give you some clues/point you in the right direction, but don't bet on it.
You may have seen these:
<http://www.youtube.com/watch?v=7z8fbQJUtuU> or some other ICS info:
Might be that I do a modern take on the Cajun in the near future. Whatever it is, it'll be solid state storage and wifi equipped.
I've just bought the car, so other things are taking priority at the moment.