I have just gotten a new MacBook Pro for my own use, but am leaving my family's iTunes and iPhoto libraries on my old Mac Pro so they can continue to access them there. I am going to copy both those libraries to my machine - but if I buy new music, how can I easily send my changes to the Mac Pro? Or vice versa? And iTunes sharing is not a very attractive option, since I will be out of the house most of the time with this machine.