I have a 2003 Audi A4 with a 6 cd audio unit. I want to connect my iPhone to play back music but I would like to do via some form of audio jack connection. Anyone know what my options are?

 

Check this one out http://enfigcarstereo.com/shopsite_sc/store/html/USASPEC_PA11_VW6.html it can do either the data connection via the bottom of the ipod(also charges it) or the Audio jack for any portable audio player. But also check this site out http://enfigcarstereo.com/ and you might find what your looking for.