You are correct, as the central is currently configured, that receiver will NOT work. You'll need to swap it for a Dell branded one which looks identical except says "DELL" on the top right of the faceplate instead of "Sonicblue" (If you look close you can tell that is a sticker covering the old Dell name).
I'm not tech savvy enough to know what to do about hacking the central to get it to work but it has been brought up before. I would have thought that the beta version of the central software would have *leaked* by now but... I haven't seen it yet.