Hi,   Please can somebody help me.   I have recently bought an ex demo C4 VTR+, I love the car apart from the very basic Hi-Fi that comes as standard.   On a car quoted as 'alive with technology' I was a little surprised to find that it had no MP3 option ?   If I want to change the Citroen offering for something more elaborate will I loose all the steering functionality and hi-fi control??   There are a number of kits but nothing for the C4 that I can find, even the guy at the car audio shop was left scratching his head.   Can somebody help me with regards to cables etc.   I will be changing the hi fi to a Sony mex-r5 (more mp3's per disk you understand)   Thanks in advance   Steve.