You can't do anything about that. The problem is that Kolumbus (your ISP) has a force-proxy on port 80 and that makes it impossible for shoutcast.com to get the right IP. The only thing to do is to wait for the shoutcast developers to fix this in a new release (hopefully the next one). I contacted Kolumbus about this and they said that they won't disable the force-proxy... If you get this to work please send me a message.