you probably need the right codecs...dont know which ones, but someone else might...you might try downloading some codec packs...i did recently to fix that same problem but cant remember which one fixed it...
anyway, props on the hookup but that site looks too good to be true...i mean, shit, i got a virus downloading a licensed tv show episode off a website, and that aint shit compared to full length movies...hope that site's not faulty like that
edit: my bad late on the reply