Audio interfaces; audio mixers; audio receivers; audio transmitter units; audio mixing consoles; audio editing software; audio synthesizer software; audio metering software; audio plugin software; wired and wireless network hardware in the nature of routers, and audio-visual control hardware in the nature of digital signal processors, microphones, loudspeakers, amplifiers, mixers, and video processors and downloadable or recorded software for transmitting, mixing, delivering, receiving, reproducing, processing and streaming audio, video, control data and digital media; audio streaming devices; microphones; headphones; speakers; firmware; apps (software) for recording and reproduction of audio signals; computer software applications connected with the processing of audio and video signals