I have previously been using Microsoft Live Sync (formerly known as foldershare.com) to synchronise files between two separate PCs and a central server. It worked great - meaning every file added/deleted/updated within certain directories on the remote PCs was replicated on the server. This enabled two remotely-based employees to work on the same files - and always kept up-to-date 'master' copies of all files/documents on the main server. However, it turns out this MS Sync software has a limit of 20,000 files - and we have now massively exceeded that limit, rendering the service useless. My attempts to share folders individually (rather than the entire 'shared' directory/sub-directories) failed, as you can only share 20 folders.
My question, then, is does anyone know of a suitable alternative to MS Live Sync (aka Foldershare) that would solve this problem? The software was great because it is P2P and worked over the web. The only other things I've found (such as peersoftware.com) operate over VPNs / local networks and not over the internet, so don't solve my problem.
If anyone knows of a good way to share files between a server/remote PCs - over a standard internet connection (or indeed a way of working round the 20,000 limit with MS Live Sync) I'd be grateful to hear it.