I need a tool, that I can say... Sync "My Documents" between two or more computers. I want it to work in the background, use the local network when it can, and the Internet otherwise.
I do not want to have to drag files to and from a special folder, or a special application.
I want the synchronization to be quiet... unless there is a problem and then it should tell me to choose which version to accept.
I understand this won't be instantaneous, but it should happen as changes are being made, as best as possible.
What is available?