I am getting tired of always having to have my MacBook Pro running to stream stuff to my 2010 AppleTV. I have an old G4 iBook laying around and at my parents they have numerous old PCs in their basement. I would like to set either setup one of the old G4 iBooks or one of these old PCs as a fileserver just for movies and music so when I am traveling the wife and kid can still have movies. Can a G4 iBook run whatever version of OS X and iTunes I need to stream to the ATV? Even if it can now, does not seem like the best future proof solution. Also, an iBook won't run with closed, I'd have to leave it open. What is the absolute most bare minimum Windows PC I could get the necessary version iTunes running on? That seems like the best solution, I just need it for streaming. I could use something semi-small form factor and just remote to it when i needed to do something.