Yes the USB is just a charger. Now supposedly you can if you have IPOD purchase a different one than what he purchased that would let you control it, but it's more expensive.
Yeah if you watch all his video's, you'll see that behind the stereo is another Cig Lighter socket with USB cig thing plugged in that the USB plugs into. He does talk about data soldering, but it doesn't go to the FRDw-aux unit he has for Aux in.
You would have to purchase the other option.
Still would love a cheap dummy aux in. But I guess this blau radios only have the ford protocol.