I've finally gotten around to adding licensing information to the Coldest source code, so I've allowed anonymous access to the Subversion repository. Full information is available on the [url=/site/content/download]Download[/url] page.
It's not necessarily set up for easy building by other people, but if you're interested in doing so and the instructions provided don't work for you, post the problem in the forums and I'll do my best to help get you up and running.