Back when I made the component system video, I kept the project and took it slightly further. Now looking back at it, I see it as a nice base to produce a game off of (or even an XNA I suppose). So I decided to tidy it slightly and release it for free (MS-PL).
When I do any improvements to it, I will roll them back into the project and do another release.
Get the release/source here: http://xtengine.codeplex.com