Does the Magnussen-Moss Act Cover DVDs?

Woody77 asks: "I'm somewhat familiar with the Magnussen-Moss Act of 1975, which is mainly about warranties, but also mentions that you can't link one product to another. The wording, in typical lawyer-fashion, is vague. But it boils down to stating that you can't tie one product/service to another. It was mainly put together to handle situations as aftermarket parts being added to a car, and a dealer trying to claim the warranty is void for doing so. Now the question is: How does the Magnussen-Moss Act pertain to DVDs? It seems to me they are trying to tie one product (DVD Players) with another (DVDs). They both use the same technology, and are a natural pair, but why can't I use my DVDs elsewhere?" This raises the point: are DVDs covered by the Magnussen-Moss Act, or was there some legal maneuvering performed to make them exempt? If they aren't exempt, then what law allows the MPAA to tie DVDs and DVD Players together?