I'm thinking about getting the new Airport so I can put my 500 gig itunes music folder on an external disk and share it throughout the house - several powerbooks and four airport expresses driving stereos etc. Will this work? Is there a way to keep just one powerbook as the master, for organzing the itunes folder on the external, etc In addition, someone suggested putting the itunes library file on the external drive to keep this all running well. Any thoughts on that? thanks.