Not every e9x came with the option to stream music AND take calls. IIRC stupidly it's not something you can code into the car either. You would have to swap out the combox for the feature.

I'm in the same boat as you though. Several people in this sub and on e90post have suggested getting this , because it communicates directly with the CIC/CCC to share Album artwork and such. It just plugs into the ports in your center console.