Okay so I've got an iBook G4 and a new iMac, both with Airport wireless. What is the easiest way to set them up so they can talk to each other? Ideally I'd like to keep my iTunes library on the iMac and let the iBook access it. But I'd also like to be able to quickly send files back and forth between them. I have some understanding of the concept of networking, but I can't seem to get the preferences and options set properly so it will happen. Help!