same problem here.
Audi 2012 Q5 with premium plus audi MMI
My iPhone 4S is recognized as source, and podcast title show up, but that's the end of the good news.
Deleted podcast titles show up too. Many podcasts that I listen to on the phone are listed as "no tracks selected"
The ones that are there, are under different alias podcast names.
For example. I want to listen to the latest episode of This American Life. I would have to scroll up to The Verge, as that is the location of the TAL podcasts. Very weird.
Not sure what to do other than get the Audi headphone adaptor, dash mount my phone, and only use MMI as a dump pipe for the aux audio.