formats

I want to save songs on to a USB stick and play in my R231 SL (with Harmon Kardon). Any one know what file format the song has to be in? I will be using songs in my iTunes library. I looked in my fake leather manual folder, but there is only a CD based Digital Owners Manual which is useless as...

Hello Ive just had to buy a new PCMCIA adapter, as my last one got a bent pin inside and wouldnt read the SD card, but everythings working ok now. Car is a late 2008 W204. My question is, my COMAND system will not play protected MP3 files that I downloaded from iTunes or AAC files or...