I recently ordered and received a couple more servers from the AOL Employee Purchase Program. They are a couple of Dell 2850s with 4GB of RAM. I also picked up a nice Dell desktop for $100 as well. Can never have enough of those. I grabbed some speakers for $5 to hook up to one of my Apple AirPort Express units to allow music in a remote room through iTunes.
Onto installing CentOS on the servers and Windows on the PC. This should complete my home data center. I am really racking up a power bill.