As others have mentioned, it's just not going to work. You have to display the content at some point and people can then just hit "PrtSc"; or the audio/video equivalent. Even without that, though, DRM systems have a lifetime of mere hours when they hit the internet.
An interesting theoretical situation in Spain; whereby we pay a tax on blank media and are allowed to download films and music for personal use. (The money goes to the rights-holders in theory). I bet what'll happen is we get blocked anyway; which will open the doors for class-action lawsuits because we're being blocked from stuff that we have technically already paid for.