Paramount apparently decided that it would be a great idea to deter and track piracy by silencing random parts of the movie Indiana Jones and the Kingdom of the Crystal Skull. This seems to be a sort of watermarking technique to be able to identify the cinema the copy of the movie was made.. if the guys who copy the movie are stupid enough to use the same sound source. This is another classic case where the industry is punishing their legit customers and not the ones who copy and download the media. It’s the same case with copy protections and DRM.
a German fan site
