well, at least for me. i figured out my "problem." and it might help you, too. (i'm a nube at this thing).
i got "the man" in 49 files of XviD compression with extensions *.001, *.002, *.003, etc.... which apparently was created with another compression program winrar.
so, i needed to "unrar" it, decompress it or "extract" it with the 1st file, *.001, and the rest is automatic; it then becomes 1 AVI file...!
now i can watch the movie!
don't know what extensions you have. but, give winrar a shot...! it just might work..... good luck.

i'm happy!!