Linux: Source code is included with both versions. Just use ‘gem install gosu’, ‘gem install ruby-opengl’ and run ‘ruby Main.rb’. You can do this.
It’s all based on the arrow keys and should be pretty intuitive. The game is limited to two minutes of continuous play.
Sorry for being somewhat late. Had to suffer through a few last minute shutdowns.
Update 09-12-08: Media loading should work on Windows now. (Ouch.)