Pre-recorded digital audio discs, CDs and DVDs featuring music and movies; encoders; computer interface components, namely, dedicated audio boards and sound cards; computer chips; computer software for gaming; and computer software for encoding or decoding audio; home theater products, namely, digital video disc, DVD players, high definition DVD players, compact disc players, audio decoders and amplifiers, audio/video decoders; audio recorders and editors for recording and editing multi-channel audio in a digital format; digital sound playback units for motion picture theater use; digital audio recorders; satellite receivers; television receivers; digital audio players; prerecorded digital video discs, DVDs featuring entertainment, namely, drama, music, comedy, action, musical theater, horror, animation, or adventure; audio discs featuring music or spoken word in a multi-channel digital audio format; pre-recorded high definition DVDs featuring drama, music, comedy, action, musical theater, horror, animation, or adventure; software to control and improve audio equipment sound quality; computer software for processing digital music files; audio circuit boards; compact discs featuring music and/or voice recordings and motion picture sound tracks to be played in synchronism with motion pictures; digital video discs featuring audio-visual recordings, namely, drama, music, comedy, action, musical theater, horror, animation, or adventure; theater sound units for playing motion picture digital sound recordings; sound recording units for recording motion picture sound tracks in digital format; audio discs encoded with motion picture sound tracks in digital format; motion picture films with digital time codes for synchronizing with an off-film digital sound source; compact discs for motion picture sound tracks to be played in synchronism with the motion picture; audio amplifiers; audio discs featuring music or motion picture soundtracks, audio discs featuring, namely, drama, music, comedy, action, musical theater, horror, animation, or adventure in a multi-channel digital audio format; audio recordings featuring music or motion picture soundtracks; cinematographic machines and apparatus; computer programs for use in audio processing; computer software for use in audio processing that may be downloaded from a global computer network; computer software for processing digital music files; computer software to enhance the audio-visual capabilities of multimedia applications, namely, for the integration of text, audio, graphics, still images and moving pictures;computer software to enhance the audio-visual capabilities of multimedia applications, namely, for the integration of text, audio, graphics, still images and moving pictures; digital video recorders; interactive audio game discs containing action games; movie editing projectors; musical sound recordings;recording and playing devices for sound and image carriers; software for digital audio encoding,recording, decoding and playback of digital audio; sound and video recording and playback machines;sound recording apparatus and instruments cinematographic apparatus; sound recordings featuring music or motion picture soundtracks; visual recordings and audio visual recordings featuring music and animation; video discs featuring music or motion picture soundtracks; video disc players; video game discs; video game machines for use with televisions