it keeps timing out!

i am trying to be my own server and it jsut keeps timing out. i turn on the server and the broadcast and it says they are both owkring and connected. but then it times out after a few minutes. it gives the "error (nak)" message followed by the "extended error" message. please someone help me! i want ot get this web radio station off the ground. to help solve the problem: i am on a network at a university, ethernet connection, and it says to check shoutcast troubleshooting and it stuff but it doesnt help. please help!!! thank you.