Receivers of electronic signals; Receivers of audio, video; Downloadable software to control and improve audio equipment sound quality; Receivers for receiving, processing, and transmitting digital and analog audio and video signals; Signal processors for audio speakers; Computer hardware for communicating audio, video and data between computers via a global computer network, wide-area computer networks, and peer-to-peer computer networks; Audio interfaces; Analog and digital sound enhancing apparatus and software for use in processing, recording, reproduction, streaming, transmission, and reception of electronic or digital signals; · Computer programs and computer software, computer hardware and components of computers and other digital devices used for generating, processing, measuring, analyzing, recording, amplifying, enhancing, reproducing, transmitting, controlling, testing, receiving and playing audio signals, files and sounds, and visual signals, files and images; Digital signal processing chips; Integrated circuits