I tried it with Firefox, Safari, and Camino too, and always got the same thing-the player errors out with a 406 error.
406-Not Acceptable: If the Web server detects that the data it wants to return is not acceptable to the client, it returns a header containing the 406 error code.
I am sure the issue isn't you ('cause it affects me too), so I'm guessing there's a problem with their server.