One of my many side projects is having a crack at trying to emulate the Alpine MBus system they use for changers. I have got the basics down like changing CDs, reading timecodes, seeking etc, but I'm a little way off yet. Then it should be just a case of a custom application for the RioCar to drive the changer through the serial port and accept the audio via the AUX inputs

Remember not everything comes as an MP3 - and if we're doing the right thing and not freely copying MP3s then sometimes a CD player can be useful. Sometimes my friends will have a CD to listen to or when I buy one it might be a while before I get around to encoding it.

I already own the changer and it's basically worthless so I am giving it a shot. It's been something I've meaning to do for nearly two years now. And I'm definitely not suggesting you go out and buy an Alpine changer since there might be a problem I can't figure out.