Multi-player you would have to both play it on the same machine at the same time sitting in front of the computer or, one of you have to be a commish and send files to each other. I have never done the second part, I have only done online leagues where a 3rd party website is used to easily send files.
You could set yourself up an FTP server and then set up your games, but, it's been ages since I have even used Linux and an ftp server, so I am not sure how easy that would be.
But I am unsure if there are any old old old videos of anyone that did the old way of sending files back and forth