Just tried the url using Firefox 3 (specifically 3.6.22) and it tries to download a .mp3 file and before I can choose to listen to it using Windows Media Player it comes up with an error message!
Actually, after a few attempts I did select the media player option, but the error message still came up.
For the main website it seems that Firefox requires Quicktime to be installed to run it (and I'm not a fan of Quicktime). Internet Explorer tries to play it with Windows Media Player, but I get nothing
FYI: My laptop OS is Windows 2K SP4