Try using
VLC media player, it has the codecs built in and will play most file types. It's a good player to keep around for those stubborn files that you can't get to play.
It could also be that the file is corrupt/fake. Before d/loading videos, check them with
Bitzi Web Lookup. It'll help you sort out the good ones.
While on the Bitzi site, search for the file there and use the magnet link to start the d/load in limewire(I think you'll find the file you want listed).
Then search for it again in LW to help find some sources for the file.
Also preview the file when it gets to 10-15% to check that it's what the title says and not mislabeled porn.