You're over thinking things here. You probably don't want a source control solution. If your workers are confused by the .svn
files, they'll be confused with Git.
A possible solution is Dropbox. Dropbox places a folder called Dropbox either under your $HOME directory on Linux, Unix, and Mac, or under your My Documents folder on Windows. Any file put there will be synchronized to the Dropbox server.
If you go to another computer, and share the same Dropbox account, all files will eb there too. Dropbox works on Linux, Windows, and Macs.
If you all have Dropbox accounts, you can create shared folders between those accounts. You can share a folder between multiple people that way. Dropbox has some versioning mechanisms. You can get back previous copies of a file, so if you don't like a change, you can revert it. You can even get back deleted versions.
Dropbox is free for 2GB of data, and you can get more space if you are willing to pay. I use Dropbox for this type of situation, and the 2Gb account is usually good enough.
There are other similar services like SugarSync, but I like Dropbox's absolute simplicity. It works out great for non-technical users.
David Pogue just had a write up just a few weeks ago.
I'm not connected with Dropbox in any way except as a user who has found that it has greatly simplified my work.
Here's a list of Dropbox Alternatives. I can't vouch for any of them, but they're probably worth a look.