I need some advice, please. Here is my situation: I want to share my itunes library and iphoto library between multiple users on the same computer (just my wife's account). I have read that putting both of these libraries in a shared folder would be best. But our libraries are increasing fast and I would rather move the libraries to an external hard drive, which I have. My two questions are this: Which method would be easier in sharing both itunes and iphoto libraries? If I were to move the libraries to an external hard drive, would Time Machine be able to back up the external hard drive as well? Thank you in advance to all people who reply, have a happy holiday!