audio loudspeakers; loudspeakers; sound amplifiers; distribution amplifiers for audio and video signals; audio and digital media systems comprised of audio-visual hardware in the nature of microphones, loudspeakers, amplifiers, sound mixers, cameras, video input/output device, USB input/output adapters, media servers, video routers, digital sound control processors, digital sound control interfaces, touch screens, input/output interfaces and video processors; subwoofers; downloadable or recorded audio calibration software; downloadable or recorded software for use in recording, processing and optimizing sound, music, voice, and performance of loudspeakers and audio equipment; recorded computer software for monitoring, managing and controlling amplifiers on a network; recorded computer software for processing and controlling audio; audio control and processing recorded software; downloadable or recorded computer software and hardware systems used for designing, programming, commissioning, managing, troubleshooting and creating user graphical user interfaces for audio, video and control in professional audio-visual integrated installations, audio conferencing, video conferencing, teleconferencing, Unified Communications and Collaboration applications, live sound systems, recording systems and cinema video equipment; computer hardware and downloadable or recorded software used to accept, modify, process, mix, route, transport, amplify, monitor, interface with and control audio signals and control data, and to control audio equipment on a network; downloadable or recorded software for controlling and processing audio files