Klaxons have launched a competition to remix their single 'Atlantis To Interzone'. You need to download a Zip file that contains a demo of U-Myx with the track preloaded. Mess around with it to your hearts content then upload the mix to their site. You can then download other people’s mixes and even rate them. Unfortunately you can't save it as an mp3, but if it's good enough it will be the B-side to the next Klaxons single. Have fun!
Here's a link to download the 'Atlantis To Interzone (Mess-Is-Law Remix)' by my humble self. Rate it if you like it, or rate it if you hate it.