Digital audio has emerged because of its usefulness in the recording, manipulation, mass-production, and distribution of sound. Modern distribution of music across the internet through on-line stores depends on digital recording and digital compression algorithms. Distribution of audio as data files rather than as physical objects has significantly reduced costs of distribution."

"The knowledge center for anyone interested in recording and mixing their own music CDs and MP3s in their own home recording studio,  ...or garage or basement. You might want to do it yourself to save money, have more artistic control, or to learn the music business."

Digital Audio Research Center