I am releasing mindbuntu 0.4b. With win32codecs, mplayer-vaapi, and Compiz. The cube is enabled but you really need a mouse and keyboard to take advantage of it. You can disable Compiz by going to System-->Preferences-->Appearance. Click on the Visual Effects tab, and choose None. You may want to do this when watching Divx files with Movie Player, or when watching accelerated MKV's with Smplayer.
I don't really use compiz but it is nice to show off the cube.
Download mindbuntu 0.4b below: