What format was the movie & what's the size of the movie (in MB)?

Which player are you using? Try playing it with VLC player & see whether the whole thing plays. VLC's free & there's a link for downoading it here: http://www.gnutellaforums.com/tips-t...p3-fixers.html

Did you check the file with Bitzi before download?
How to use Bitzi
If other users have rated the file then you'll get some idea of whether it's any good