I'm sure this has been answered many ways but Q5 doesn't have bluetooth streaming. Also anything you plug into your iPhone with a Dock Connector will kill any usefullness from your phone. Never use a dock connector if you want to use your phone audio apps or phone in general. So what to do?
I have my iPhone 4 and now 5 mounted using the ProClip products. Q5 mount plate, iPhone 5 mount for (original lightning to 30 pin apple adapter cable, not the iPhone5 lightning charging cable). Here is that cable Apple Lightning to 30-Pin Adapter (0.2M) from Amazon.
Now you need 3.5mm Audio Line Out + 30pin Usb Dock Cable for Iphone Ipod from Amazon. This will allow you to plug one end into the 30 pin lightning adapter and the other end has a audio connector you will plug into the LINE-IN audio adapter in your Q5 glovebox, NOT THE AUDI IPOD ADAPTER, go to Audi and get the line-in version.
You'll then need an audio 3.5 extension cable to span the distance from your dash area to the glovebox AND you will need a USB extension cable with USB 5V power adapter which is plugged into my center console. I drilled a small hole in the center console in the back bottom and ran the USB cable down and along the side of the passenger seat. Then you can bring it up near the umbrella holder behind the plastic parts and slip the audio piece into the glove box from anothe small hold I driller where there is currently a small square opening. Just wrap all the cables as necessary.
NOW I get in my car, dock the phone in the cradle, it get's power and my line-in receives high quality (non-bluetooth) audio from my phone. I can use all my apps, pandora, di.fm, etc. When I make a call my bluetooth in the car kicks in and mutes the line-in.
Total nightmare but so amazing. AND if you are gutsy you can pry out the right edge of the AC control panel, it will just pop out and you can slip the lightning to 30pin dongle right behind the AC and queeze it back in and run the cables behind the console. It looks pro installed.
Products:
Proclip Q5 mount plate 854264 $29.99
Proclip iPhone5 Dock 514434 $79.95
Apple Lightning to 30-Pin Adapter (0.2M) Sold by Amazon.com LLC $34.99
3.5mm Audio Line Out + 30pin Usb Dock Cable for Iphone Ipod Amazon/Able Provider $7.88
3.5 Audio extension cable (get the right gender) $5
USB Extension Cablle with USB 5V Car Charger Adapter, not 10V, won't work with 30pin adapter $30