Where your-screen-name is your screen name (duh) and file-name.mpg is whatever the file is called. If it's a real player file, it may be file-name.rm for example.
Hmmm, now I'm lost. I don't remember any AOL version like that. You could try and look up FTP in your help section of AOL, and it should tell you how to FTP.
I wish I could be more help! Now I'm sitting here thinking about that crazy movie Strange Brew with the two guys from Canada.