Linux in Radio Broadcasting?

This Q just in from pvjr: "I work for a non-profit Christian radio station, but this question could apply to anyone in radio broadcasting of any format. We are using Window as our platform, essentially due to the fact that all of the broadcasting software is Windows based. I was wondering (hoping actually) if there were any Unix based broadcasting software out there? This should not be confused with Realplayer or other streaming software as the software needs to be able to generate logs with a variety of different catagories, allow for fillers, logos, and jingles, along with editing. If there isn't, this would be a wonderful place to start an open-source presence, where one could take advantage of the stability, reliability, and security of Unix for mission-critical machines."