I bought a 2005 A4 3.2 Quattro 9 months ago, with the 6 CD changer in-dash standard and XM satellite radio, tape deck,Radio and I now wistfully wish I had bought the Audi NavSystem with dvd and tv . Is there any way to buy the OEM and have it installed ?
And where and how please advice ???
thank you

I assume you have like the Symphony right now?

I upgraded my 2004 S4 to navigation based on info and advise from AudiForums.
Check out http://audiforum.us/rns-e/

Bought my system from ebay. Did the install myself.

Also check out:
http://www.navparts.com/
You can buy everything you need as a kit.
A fairly knowledgeable Stereo shop should be able to install this for you.

I bought one on ebay. Just installed it yesterday. Very easy.