Okay, so the first playable version might be available at http://dl.dropbox.com/u/15538966/DiscoFiveRC1.zip. I say might because I really don’t know for sure if it runs on anybody else’s computer. Tested and works on both of my linux boxes, but it might not go anywhere on other systems.
(EDIT: Managed to test it on a laptop running windows 7. Seems to run just fine there.)
For anybody who can’t (or won’t) play it, here are a couple screenshots: