I am working on the multiplayer mod and I can tell you it's going to be a while. Some things are really hard to go back and add later, and this is one of those. I do have a full time job and this is just a hobby for me, so I expect we're still a few months off for a beta release.
Even then, I use Linux not windows, Presumably, the code should be cross platform compatible, but you never know.
Hope this helps -
Geoff
