Audio/Video streaming restricted.

My schools public wi-fi access has blocked any audio/video streaming. For example, youtube is blocked and any other video streaming site. I wondered if there is a way to bypass that restriction?

To disable any web-browser proxies:

IE:
Tools -> Internet Options -> Connections Tab -> LAN Settings. Uncheck "Use a proxy server for your LAN".

FF:
Tools -> Options -> Advanced -> Network Tab -> Settings. Select "Direct connection to the Internet"