(Digital Rights Management)- Software intended to prevent the unauthorised duplication of copyrighted audio, video or software. Unpopular with users because if there is ever a problem with it, such as the rights management company folding, your legallypurchased content becomes unplayable. Following a lot of problems of this kind it has largely been abandoned by the music industry.
Any technology used to protect the interests of owners of digital content and services (such as copyright owners). Typically, authorized recipients or users must acquire a license in order to use the content.