pretty much you choose two dirs you want to sync up and hit update and it will update. They need to be directories on your system, so you could do that by setting up a nfs client/server or microsoft network neighborhood directory share. It'll work as long as windows sees a remote computer's directory as a local directory on the mp3car computer. So you load up ME and go into settings and click on sync or such. It doesn't do it auto. Hope that helps.