I've been using the cradle for a few weeks now, and correct, no media access, which I don't care about because I dedicate a 160gb iPod in the car via the USB port.
But the signal strength is definitely improved. When I connect it in less than ideal signal areas, the signal strength increases. Disconnect it, and it decreases. So somehow, the sharfin is in use.
So from this perspective, I'm pleased.
2011 740i - Cashmere Silver/Saddle & Black Nappa - Fineline High Gloss Trim - Luxury Seating - Driver's Assistance Package - Convenience Package - Premium Sound Package - Active Roll Stabilization - Cold Weather Package - Smartphone Integration - Rear Camera