Cannot Hear Live Streams


I am trying to listen to the live streams at or and I cannot start it neither with Safari 2, nor with Firefox, nor Opera. I have an iBook G4 with Mac OS 10.4.2 and i think it worked for a time, but after the last security patches it does not work anymore. Oh, and I have Windows Media Player installed, the plugins too. I also tried to open it with VLC but i don't know how to do this. Thanks for your help!

P.S. I have no firewall installed!