I don't know if this is possible. I have an iMac. I have an awesome iTunes music library and a bunch of apps. I have an iPhone and an iPad I sync to it. I am getting an Air. I don't want all my music on my Air (smaller "disk"). So I want to just copy some of my albums from my iMac to my Air. So far so good I think. But if I am on the road and want to sync purchases and some music to my iPhone or iPad, can I have my Air sync with them? A friend thought "yes" as long as both computers use the same Apple account. Is this true?