A server for each? how much music do you have FGS? Seriously dude they will create so much heat and noise youll wish you never wasted your money.
My 12tb one is bad enough!
I was actually thinking of going raid6 but you think raid5 would be a better choice
All you're using the server for is streaming media, correct? If so you can get away with just about anything. A dual core CPU would be plenty. Just get as good as your budget will allow. Pick a board that will give you the options you need. I'd probably go with something that has onboard video like an 880G chipset. I usually go with Gigabyte or Asus for the brand. Go with AM3, you have a wealth of options for a cheap dual core all the way to an expensive six-core.
1,000th post!