Note: for Mac users, do not try to play it, it may appear as a text doc. Either "right click" or "control click" on the link above and choose "download linked file". The file is about 20MB. It will download with extra extensions and appear like this:

theunprotected.m4v.txt

You need to remove the ".txt" so that it just appears:

theunprotected.m4v

Then you can drag it into iTunes, etc.