The Source (along with class files) can be downloaded here. The source was based on that found at here and my thanks go out to Sorin Gherman for making his source available. If you're interested in the write up I did for this project and submitted to my AI course, it can be downloaded (in ps format, e-mail me if you need something else) here.
The defaults will give a reasonable game, if you want to see it play quite well, try a board size 5, with a depth of 3 (the setting button to the right of the algorithm name). I find this challenging but beatable. I have never beat a board of size 5, with black having a depth of 6.