Those numbered files are part of winrar - an archiving prog similar to Winzip. There should be a file with the extension .rar - normally you would double-click this file and you would then be able to extract the movie from the archive.
I don't know if there is a version of Winrar is available for the Mac, but an alternative called UnRarX is available here:
http://www.unrarx.com/
It's likely that the actual movie file itself may be encoded with xvid or similar. You can get a Mac xvid codec here to use with your media player:
http://www.xvidmovies.com/codec/