The audio standard 5.1 is used for television and film. Despite the name implying the use of five channels, the format actually consists of six channels of audio: three in the front, two in the rear, and one channel dedicated to the subwoofer. Software is available that can “rip” audio in 5.1 from a DVD for playback or manipulation later. The process is straightforward and does not require a specially built computer. Writer Bio