So... I've finally settled on what I'm going to do with this.

I've recently made a music player for my partner as a little home made Christmas present. It's great; runs RuneAudio, has a memory stick full of her favourite albums, has Airplay receiver capabilities, and is generally a great little system.

I'd like to add that to my car; the only thing to sort out now is how to power it and switch it on/off with the car's ignition.

Cheers!