Radio-broadcasting receivers; video monitors; microphones; loudspeakers; woofers; sub-woofers; headphones, earphones; audio/video amplifiers; recorders/players of optical discs; recorders/players of magnetic tapes; hard disc recorders; video cameras; audio mixers; audio mixing consoles; audio signal processors; audio/video receivers; graphic equalizers; amplifiers for musical instruments; effectors for musical instruments; digital phase samplers used to record, replay and edit digitally stored music samples; electronic tone generators; recorders and players of MIDI data; electronic music sequencers; MIDI interfaces; personal computers; computer hardware, peripheral equipment, computer software, and computer programs all used for recording, editing, and mixing computer music; computer software for generating, reproducing, effecting, and/or recording sound; computer software for compressing and expanding sound and video data; computer software for arranging and sequencing music; computer software for creating computer music; computer software for playing music on a computer; computer software for encoding/playing MP3 music; computer software for producing and reproducing sound; computer software for encoding and/or reproducing sound or images; computer software for authoring/producing digital contents; computer software for operating and controlling audio apparatus; computer software for mixing sound or music; sound cards; electronic circuits for sequencing music; electronic circuits for mixing sound or music; hard disk drives; electronic integrated circuits; large scale integration chips