I haven't been able to fix the demo download on desura yet (I need to modify all files in some way to trigger "changed file" on Desura). So I uploaded to a separate file hosting service for those who want to try it out while I work on this issue.
The download is here: http://www.mediafire.com/?85ynn5tr6784wot
To run it, be sure to have June 2010 SlimDX RunTime installed. It can be downloaded here: http://slimdx.org/download_june10.php