***The below reply is Off Topic***
Wow, this is the first I've heard of UMC. At first it looks like an early stage SVN build of xbmc with a modified Aeon skin. After pouring over the wiki, it seems like the only noticeable difference from XBMC is the way libraries are implemented. While I won't be using it any time soon, I'll be watching it's progress. It has potential to rival XBMC and Boxee if properly developed and maintained. Thanks for posting about this, it's got me interested.