Steaming any application we like to a media server like icecast2 or shoutcast was made easy with pulseaudio. You wont need any special plugins for every application. Pulseaudio has all the needed tools to make it work 🙂
The Xfce development team is proud to announce the first preview release for Xfce 4.8. Together with this preview release, the Xfce project announces the feature freeze for the final 4.8 release which is set to be pushed out to the world on January 16th, 2011.
Source: XFCE official site