Since it's gone up I've changed a few bits of code to fix some bugs on the server side, and been working on a new proxy for the client side.
Keep in mind, the only thing I've ever written in Java before was a "Hello world!", but so far the new proxy seems to be working well.
For the client version, just download it and run it. Doesn't matter where; it uses the latest launcher from minecraft.net.
For the server version, you'll need to make sure that the proxy is in the same directory as the
minecraft_server.jarfile. If you have a mod that you want to run with it, then use
Bugs, responses, hate mail, etc, can all be left in the comments or sent to my email address which is on the Mineshafter page.