Aaron Swartz was nice enough to download one of my files and test it on Windows, Mac OSX and Linux.
Here are links to the players that could run the files.
Aaron downloaded http://www.lisarein.com/videos/tvclips/dailyapril2003/4-02-03-shilling-sm.mov and tested it:
Mac: Works in QuickTime.
Win: Should work in QuickTime and VLC
Lin: Works in VLC