I want to synchronize 2 macbooks and 2 iphone4s with only one database
I want to synchronize 2 macbooks and 2 iphone4s with only one itunes music database, kalender, contact and so on. I use only one itunes account. All devices shall have the same informations (for the iphones available).
Do I have to bring all informations on an external harddisk?
MacBook Pro (15-inch Mid 2009)