Python is now supported.
I made it more clear that the AI is being run on your own computer. This is not an experiment to find different AIs for games. It is an experiment to test your own AI against others.
I shouldn't have copied the FAQ here, since I've been making changes... The most up-to-date information can be found here:
http://codersblock.net/arena/tutorial.php
If you have any questions, please ask.