I've been looking into this for my 2004 p12 SE. I have discovered what I believe to be the CD changer plug in the passengers side footwell (have to remove the lower plastic panel. Its Orange in colour and taped up to the cable loom. Had a search in the boot previously to no avail, think they only continued the cable into the boot on the SVE and SX. There is an outfit called xcarlink that do a iPod/aux input adapter that allows you to control and charge your ipod from the main car controls (incl steering wheel controls), also can plug any 3.5mm jack device in as well and there is a handsfree bluetooth kit that can also be used for streaming music via bluetooth. Price is approx £75 for the basic kit and another £38 for the bluetooth kit. Looks alright and am going to give it a go as I cant stand UK Radio any longer!Its a hard wired system so should get digital quality. Plus can stream from laptop (eeepc) via bluetooth.