Why don't these vids play in FireFox?

[Cleo]

Tested using Mac IE.
I had to look through the source code to find a direct link to the wmv files for this test since embedded wmv files do usually play just fine in all my browsers.

Both of these URLs do launch WMP instead of trying to display text.
http://colo50.mia.colo-cation.com/ds...aster_256k.wmv
http://g.wasteland.com/dsa/wasteland_master_256k.wmv
But the second one gives an error in WMP "The request is not valid in the current state."

It is interesting that these URLs are the only time I've ever even seen Mac IE work correctly and launch WMP.