Just a heads up for anyone else interested in doing this. This just kinda clicked last week after using the nexus 7 for a year...
This works great for audio. Plug it in the aux, pair it and done. No wiring needed...
[ame=http://www.amazon.ca/Aluratek-AIS01F-I-Stream-DockFree-Bluetooth/dp/B006OT2WFM]Aluratek AIS01F I-Stream DockFree Bluetooth Audio Receiver (Black): Amazon.ca: Office Products[/ame]