The Fraunhofer Institute, the originator of the MP3 music standard, announced that it is adding support for surround sound and a form of copy protection to the MP3 file format. The surround sound feature will be able to use 5.1 speaker setups if available, but will remain compatible with 2-speaker stereo systems. Fraunhofer is also adding what they call Light Weight Digital Rights Management (LWDRM). LWDRM adds a unique user signature to MP3 files that could be used to track who originates and shares files. [Via Digital Audio News]