SHOUTcast can do that in much higher quality than Ventrilo / TeamSpeak, not to mention that the playback works on pretty much all media players (Winamp, VLC, Windows Media Player and so on). The problem is getting the station to play music 24/7.

"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram