Computer software programs and hardware for manipulating digital audio information for use in audio media applications; Computer software programs and hardware to control and improve computer and audio equipment sound quality; Computer software programs and hardware for processing digital music files, audio files and video files; Computer software programs and hardware for processing audio between computers and audio hardware directly and via a global computer network, wide-area computer networks, and peer-to-peer computer networks. Audio processing software and digital sound processors for the improvement of digital audio sound quality for use in computers, audio production, music, music production, music playback, film, film production, television, television production, television transmission, broadcast radio, satellite radio, video games, computer game programs, computer game cartridges, and cassettes, computer game programs downloadable via the Internet, medical equipment, digital telephone transmission, mobile telephone transmission, avionic audio transmission, military audio transmission, and the transmission of voice, audio, and data by telecommunications networks, wireless communication networks, the Internet, satellite, information services networks and data networks