I know that the B7 DVD nav kit will also allow to play MP3 CDs. I'm just curious if will also read MP3 *DVDs*. That would be very nice :) Anybody knows from seeing it working on a A6 or..?

From http://www.germancarfans.com/news.cfm/newsid/2040906.006/page/14/lang/eng/audi/1.html
"The new Audi radio-navigation system plus with DVD drive not only enables almost limitless navigation throughout Western Europe, it can also be used to play audio and MP3 CDs."

there is a dvd based nav system but that is a different module.

If so I appologize - though I have not seen any info describing the system as playing DVDs

(based on the pic in the S4 forum)

But I guess you're right. The DVD reader must be dedicated for the nav, not audio. Maybe they support 2-discs for extra maps/data in case you change country or something. Will definitively play with it when I'll receive it in... 2 months :) Thanks