You are in luck! See, there's this guy by the name of Oddsock, and he designs handy Shoutcast utilities. He's now working on a plugin that does exactly what you're looking for. It's currently alpha, so it's not complete yet, but within a few weeks it will be.
You can check this out and read up on his other useful tools at http://www.oddsock.org
Enjoy and good luck!