To download OE Cake, go to THIS WEBSITE and click on the download link for your OS (Linux not supported as of yet).
WARNING: that website is OUT OF DATE and does not host the up-to-date version of OE-Cake.
Current Downloads Edit
The most up-to-date version of OE-Cake for OSX and Windows can be found here:
Old mirror of the original distrubution, without the extra creations: