So far UNC-CH is using RealMedia. ATN has a 100-stream unix server. The Alumni Association, School of Public Health, and Pharmacy are using NT servers. Real is committed to Linux. With AFS, we can have disk quotas and data can live on other machines.
Content creation is the hard part.
Management isn't a problem. Some readings were captured during the NC Literary Festival. Good quality capture, again with a wireless mike with no conflicts with other wireless mikes. Copyright issues are the same for audio and for video as for other media. If you're working with a panel of speakers, you need a single source of audio.