Hello, I have a mac and pc, both of which are connected via ethernet on a LAN, and I would like to keep very specific folders in sync between these two machines. I actually have quite a few folders to keep in sync, so I would prefer to have a way of either having it sync in the background when it detects changes, or better yet just have a way to manually click a "sync" button, and it will go through an compare all the folders and update accordingly. The goal here is to have whatever is newest or doesn't exist to be update between the two systems. Any suggestions? I dont mind paying for an app if it does the job well on 10.8.