I've just realeased the first version of my Icecast2 authentication module for Xoops over at the dev forge.
Authenticate listeners of your Icecast2 streams against your Xoops database.
Features: o Allowed listenting Groups o supports icecast2 timelimits o Customisation of icecast headers o A Block listing all known streams o Should be able to it use with multiple icecast2 servers.