www.logicsupply.com < check out their pc switches, $40.
also,
ive done a ton of researching on this and the lilliput is the way to go, fiberglassing it in.
i have all the parts including the computer, soundblaster external soundcard hooked up to my 4 ch amp, and everything, all i need is my lilliput!
ive bought all my parts from logicsupply, great peoples!~!
also, you outta check out the software MediaCar, its made for the touchscreen, and you can do anything: radio, cd, mp3, dvd, gps, and there is a patch i think to hook your xm antenna up to it. ive been playyin with it on my comp and its awesome..