Actually, to say it's only an iTunes media server is a bit of an understatement. The author has a system of security cameras and lots of video streaming (from TV to DVD video) worked in as well. The one requirement: it had to be an all-Mac system. If you happen to be a dedicated Mac user and you're looking to set up an integrated media environment in your home, this post looks like a good reference to follow.
How-To: The Ultimate iTunes Media Server [MacTalk Forums]
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