ProfessorPoopyPants

You've made a grave mistake. Prepare yourself for the charge of the light freebie brigade.

Agreed, put some compression above the 20khz and below the 15hz ranges and you could wipe the audio watermarking from it, easy peasy. Of course, the really low frequencies will be lost for the people who spent a fortune on crazy subwoofer systems, but generally they'll have money to burn anyway so they probably bought the film.

Also, an FYI, music tech student here, I'm talking about compression as in cutting out sound ranges and general EQing, not compression as in making data more space-efficient.