Audio amplifiers; Audio discs featuring music or motion picture soundtracks; Audio disks featuring multi-channel digital audio music, voice recordings or motion picture soundtracks; Audio disks featuring motion picture soundtracks in digital format; Audio recorders and editors for recording and editing multichannel audio in a digital format; Audio recordings featuring music or motion picture soundtracks; Audiovisual receivers; Audio-video receivers; Cinematographic machines and apparatus; Compact disc players; Compact discs featuring music, voice recordings or motion picture soundtracks; Compact discs featuring music, voice recordings or motion picture soundtracks; Compact disks for motion picture sound tracks to be played in synchronism with the motion picture; prerecorded CDs and DVDs featuring multichannel digital audio music, voice recordings or motion picture soundtracks; Computer firmware for use in audio processing; Computer game software; Computer programs for use in audio processing; ; Computer software for encoding or decoding audio for use with CDs and DVDs; Computer software for processing digital music files; Computer software to control and improve computer and audio equipment sound quality; Digital audio players; Digital sound playback units for motion picture theater use; DVD's featuring music, voice recordings or motion picture soundtracks; Prerecorded digital video disks featuring music, voice recordings or motion picture soundtracks; Digital video disc drives; Digital video disc players; Encoders; High definition television receivers; Home Theater products, namely, Digital Video Disk players, audio decoders and amplifiers, audio/video decoders for use with DVDs featuring music, voice recordings or motion picture soundtracks; Motion picture films featuring comedy, drama, action, adventure and/or animation with digital time codes for synchronizing with an off-film digital sound source; Musical sound recordings; Prerecorded digital video disks featuring multi-channel digital audio; Receivers, namely, radio, satellite, television, audio and video receivers. Record players for digital compact disks; Signal processors and transmitters for cable or satellite broadcasting; Software to control and improve audio equipment sound quality; Software for digital audio encoding, recording, decoding and playback of digital audio; Sound amplifiers; Sound and video recording and playback machines; Sound mixers with integrated amplifiers; Sound recording apparatus and instruments; Sound recordings featuring music or motion picture soundtracks; Sound recording units for recording motion picture sound tracks in digital format; Television receivers; Theater sound units for playing motion picture digital sound recordings; TV sets; Visual recordings and audio visual recordings featuring music and animation; Video discs featuring music or motion picture soundtracks; Video disk players