Back in the days of the Roman Empire, a small donkey is born with VERY long ears, that keep getting him into trouble. When his owner throws him out of the stable in disgust, his mother sacrifices her life to save him from a blizzard. And, guided only by his guardian cherub (Tilly), he has to find his rightful place and destiny, somewhere on the road to Bethlehem.
RiffTrax are downloadable audio commentaries featuring comedian Michael J. Nelson heckling (or riffing) films in the style of Mystery Science Theater 3000 - MST3K - , a TV show in which Nelson was the head writer and, later, host. The RiffTrax are sold online where users can purchase and download the commentaries.
This copy you're downloading already has the audio commentary synched up with the video. All you have to do is play it like any other AVI file to see the show with the commentary.
If you like this, there's lots of other Rifftrax movies and shorts available. Throw some cash to the folks at Rifftrax!