Oracle VirtualBox is incompatible with Windows Media Center.
It would have been nice to have seen that sentence somewhere before. But, no. I have to troubleshoot the issue myself. Figure out what I changed. Walk back the track. I know, I know. Oracle would point a slim, sushi fed finger right at Microsoft and its myopic home network hegemony. Microsoft would point it right back at Oracle and say, what? You couldn't figure out how to implement our nearly undocumented API? What idiots! Seriously, screw you guys. I'm just trying to live five minutes in the future here, and both of you fat fuckers are harshing my buzz. But yeah... The free software was the loser. I just uninstalled it and I'll do my alternate OS experimentation on my Mac. You know - where we go to do real work. And Xbox, it wasn't your fault. You were doing exactly what you were supposed to do. Which is way more than I can say for that glorified Blu-Ray-drive-slash-boat-ancho...