Audio equaliser apparatus; Audio equalizer apparatus; Audio frequency amplifiers; Audio mixing desks; Audio speakers; Bass amplifiers; Bass speakers; Computer operating programs, recorded; Digital audio and video recorders and players; Downloadable computer software for controlling the operation of audio and video devices; Downloadable computer software to control and improve computer and audio equipment sound quality; Downloadable computer software to enhance the audio-visual capabilities of multimedia applications, namely, for the integration of text, audio, graphics, still images, and moving pictures; Downloadable music-composition software; Downloadable music files; Downloadable ring tones; Downloadable ring tones and graphics for mobile phones; Downloadable ring tones for mobile phones; Downloadable software to control and improve audio equipment sound quality; MP3 players; Sound equalizers and crossovers