apparatus for the recording, transmission and reproduction of sound and images; multitrack digital audio recorders; sound mixers; audio amplifiers; preamplifiers; analog-to-digital converters; digital-to-analog converters; loudspeakers; audio interfaces; electrical communication machines and instruments, namely, microphones and tuners; interfaces for computers; recorded and downloadable computer software for recording, playing, editing and manipulating audio, sound and videos; recorded and do...