Optionally, you can use a PXDX in addtion, which you connect to the Bluetooth adapter with RCA cables. Then you can connect the PXDX into the CD Changer port on the RB1. The end result is the same as what you have through the FM antenna, but this is a more direct connection for 'purists'.
I have NOT tried this, but its on my list. Since its effectively double the price, I am trying to find a deal somewhere.