iTunes 8 - Some radio stations don't play

[Snerp]

I'm using iTunes 8 on my "24 iMac and I can't play some radio stations. It's weird because I can connect to them at work on my G5 Desktop but not at home. At home the connection is actually being made, you can see the connection pop-up window with the progress bar, but once connected there's just silence. Here are a few of the stations I'm having issues with: "Cabo Wabo Radio", "Smash5.net" and "RockTimeWarp". I know for sure it's not because of too many connections or my internet because I can play the stations if I go directly to their websites. Any ideas at what's going on here?