Computer hardware; computer hardware and recorded and downloadable software for sound processing; computer hardware and recorded and downloadable software for creating and editing audio files; digital signal processors; audio amplifiers; audio processing, recording, reproduction and processing hardware, namely, microphones and transducers, preamplifiers, analog-to-digital converters, digital-audio processors, digital signal processors, digital-to-analog converters, integrated circuits, and power amplifiers; recorded and downloadable computer software for audio processing, recording and reproduction; audio mixing hardware, namely, audio mixing boards, sound and audio mixing equipment and instruments; recorded and downloadable computer software for audio mixing; audio equalizers; recorded and downloadable computer software for audio equalizing; audio analysis hardware, namely, audio analyzers and audio analyzing equipment; and recorded and downloadable computer software for audio analyzing; recorded and downloadable educational software in the field of music theory; audio limiters; audio compressors; audio amplifiers; audio mixers; audio hardware, namely, audio reverb units, audio equalizers, audio delay devices, audio room emulators, and audio tape machine emulators; recorded and downloadable computer software for creating reverb effects; electronic sound mixing, processing and synthesizing apparatus; musical instrument emulators, namely, digital sampling synthesizers; musical instrument controllers; sound recording hardware, namely, audio recorders, microphones; recorded and downloadable computer software for sound recording; music sequencing hardware, namely, music sequencers; recorded and downloadable computer software for music sequencing; audio apparatus for use in cars; audio hardware, namely, audio recorders, microphones, headphones; recorded and downloadable computer software for live music production and mixing; consumer electronics audio apparatus, namely, stereo receivers, stereo amplifiers, stereo tuners, stereo cables, personal stereos, car stereos, audio equipment for vehicles, including, stereos, speakers, amplifiers, equalizers, crossovers and speaker housings, microphones, power amplifiers and speakers