I have been looking for a factory way to get bluetooth streaming in my 2012 S3. After some research I found that Audi offered a bluetooth dongle for the AMI that would work with RNS-E. It would allow stereo streaming and you can use the steering wheel to change to the next / previous track. It wouldn't show track info or playlists on the RNS-E or the DIS.
So I contacted Audi to buy it (part number 4F0051510J) only to find it has been discontinued.
I did more research thinking I could buy a bluetooth - 30 pin dongle and plug it into the AMI. The more I looked into this I realised that this wasn't going to work. Most of the bluetooth - 30 pin adapters are for docks that use the line out feature, so it's almost the same as using the headphone jack in terms of smarts. Obviously the AMI wasn't going to like that as it enumerates playlists and track data from the iPod /iPhone.
So then the next thought was to buy a AIM AUX cable and a bluetooth A2DP receiver and connect that in the glove box. The only issue is wiring a switched power source to the glove box.
Then I stumbled across a forum where the guys were buying 30 pin to bluetooth adapters and modding the AIM iPod cable so the AIM would think it's a AUX cable. This way the AIM cable would power the bluetooth module, but think it's an AUX connection. So you can stream music but can't change tracks from the RNS-E or the steering wheel. This sounded good, however after more research I found this only works on the 3G MMI, every other version of MMI and RNS-E stops applying power to the iPod charging lines of the AIM cable when in AUX mode.
So at this point I thought I would just wire some power into the glove box when I stumbled on this.
ViseeO Tune2Air A2DP - WMA1000 | Advanced In Car Technologies
Apparently it fully impersonates an iPod. You plug it into the standard AIM iPod / iPhone cable, pair you iPhone to it, and it's as if your iPhone is plugged directly into the glovebox. (this includes the iPhone 5) The RNS-E displays all track playlists and track data and you can use the steering wheel controls.
So fingers crossed it works. I have one ordered, hopefully it will be here soon. I'll post up some pics and let everyone know how it goes when I get it.