Icecast, and a port 80 redirect

I run a charity radio station for a month a year, and as part of that we stream the content (appropriately licensed, of course).

It would be nice to combine that streaming with website hosting, allowing the radio to be used on the same domain (as opposed to several sub-domains deep which is the current situation).

Ideally a redirect through apache (ProxyPass) would allow users behind daft outbound firewalls to listen in.