Launchpad, where the project is hosted, uses a
version control system called Bazaar. A VSN is kind of like a wiki, but for
files. It's a tool primarily used by people that write computer programs, to co-work easily and keep track of changes, get latest updates etc.
From time to time I update the /trunk of WTactics. Every time I do so, any and all changes from my harddrive are placed in the trunk, old files are automagically removed/renamed etc etc.
To wrap it up: Exact details and what can be done with the system we use can be read in the
Bazaar documentation. If you however only want to always have the most up to date files you have to "ask" for them yourself from the system - it does not update them automatically on your harddrive (i.e. it does not download anything new for you unless you give it the command to do so.)
A graphical way to do so would be the
Bazaar Explorer - it seems very easy to use & supports all you need.
Please give all this a shot. If you fail a couple of days please post your problems here and I'll try to assist you.
Edit: This is a more direct link to my trunk (every contributor has his own, but i am the only one, so ; ) >>
http://bazaar.launchpad.net/~snowdrop/w ... runk/files
You can of course also download the latest file directly from there, the browser.