While I'm not advocating anything illegal, I do know that Zamzar allows you to save videos in several media formats. If that doesn't work for you, try Google for some alternatives, since I know methods do exist. But again, if it's illegal or against your school's policy, then I am not advocating it!
So have a look at just three of the dozens of clever videos they've created. While the History Teachers don't have a website (that I know of), you can friend them on Facebook to keep up to date with their latest creations.
The French Revolution ("Bad Romance" by Lady Gaga)
The Canterbury Tales ("California Dreamin" by the Mamas and the Papas)
The Odyssey ("Across the Universe" by the Beatles)
Sung from the point of view of Penelope, Telemachus, and Odysseus. Clips from the 1997 TV version with Armand Assante as Odysseus, Greta Scacchi as Penelope, and Alan Stenson as Telemachus. Vanessa Williams is Calypso and Bernadette Peters as Circe and Isabella Rossellini as Athena.
These videos would be a great introduction for many of the novels we teach, and might even inspire students to create their own songs. Extra credit, anyone?