So I've run into a minor, but pretty annoying problem. I run two user accounts on my iMac, one for freelance work (which has some basic time keeping apps, my design apps, and iTunes) and my personal account which I use for my everyday tasks. I enjoy listening to music while I try and get work done, and it never seems to be a big problem, until I start adding music. I have a fairly large music collection stored on an external HDD, and I keep it up to date on my personal account. Is there any way to sync this HDD constantly so I don't have to manually add music on my Freelance User everytime I add one to my Personal user? I often get lost in what I've added and what I haven't, and I would just like these two users to have identical iTunes libraries.