ive googled everywhere for this type of process; whether it be an application or a bunch of scripts that would be able to do this, it didnt help me at all and/or i didnt understand it at all. is there a simple application that will allow me to plug in my usb drive and it will seamlessly sync with the "documents" and "pictures" folders, for example. basically, i want it to act like im syncing my iphone with my computer: how it automatically updates every time i plug in my iphone. also, i want the program to update the old files with newer, updated files, whether it was updated on my computer, or from another computer saved on the usb drive. basically (again), i want my usb flash drive to be exactly verbatim with the personalized selected folders on my macbook pro (with the older files updated with the newly modified files).