The Best iPod, bluetooth and Mac Mini solution

I've searched this and other but I haven't found a definitive answer on what the best solution for iPod, and third party bluetooth phone support is. My 2006 A3 has nav and buttons for bluetooth but lacks actual bluetooth.

iPod: Gateway 500 looks to be the best solution for controlling and viewing track names on my nav display. Would you agree and will it work with my A3?
Products

Bluetooth phone: Parrot with the SW100C looks to be the ticket for this. Agree?
AudiWorld Forums: Aftermarket Bluetooth that uses OEM steering wheel buttons! !

OK, the really interesting one Do you think I could run a Mac Mini and override the nav display with G-Net? If so maybe I shouldn't even spend the money on the Gateway 500 and think of just using Apple FrontRow, and a bluetooth remote for my music?
G-NET Audi A6 - Audi A8 - Audi Q7 TV Nav Video Input Interface. Connect a DVD Player, TV Tuner, Reverse Backup Video Camera, iPod Video, Aftermarket Navigation Or Other AV Source To Your Car's OEM GPS Navigation Headunit - LCD Screen Display - Nav System.

Pic of it done in an A6:
http://files.macbidouille.com/news/2...difrontrow.jpg

Thanks!