A demo (from the demoscene) is mostly a non-interactive audio-visual presentation that runs in real-time on a computer. This one is done with Java and can be download as a executable for PC here http://holon.drastic.net/. Credits go to one of my former colleagues rtz23 and pandrr. Love the outcome and the powerful colors.. couldnt get it to run on a pc though. I´d love to see how it works in real time.