I gotta go with meedermow on VLC. I encoded the non-commentary version of ROTE for ocpmovie with Handbrake on OS X. He put together the commentary version. VLC will play both flawlessly. I would recommend staying away from the crap that is WMP. Of course, I say that about anything with Windows in the name. Seriously though, VLC is IMHO the best video player out there. It plays virtually anything. The fact that it is platform agnostic only enhances its supremacy.