Electrical apparatus for recording, transmission or reproduction of sound; data processing equipment; computer hardware; computer firmware; computer software; software to control and improve audio equipment sound quality; computer programs for processing digital music files; application software; application software for audio devices; application software for wireless devices; central processing unit clocks; clock generators for computers; encryption software; central processing units for processing information, data, sound or images; audio apparatus and equipment; audio players; audio digitisers; MPEG audio players; digital audio players; high fidelity audio apparatus; audio mixers; audio receivers; audio recorders; digital audio recorders; audio effects apparatus; audio processing apparatus; wireless audio speakers; pairable wireless speakers; wireless headsets; wireless headphones; audio loudspeaker systems; equalizers being audio apparatus; control apparatus for audio signals; signal processors for audio speakers; apparatus for transmission of sound; apparatus for wireless transmission of acoustic information; audio frequency apparatus; sound amplifiers; digital amplifiers; audio frequency amplifiers; electrical amplifiers; integrated audio amplifiers; speakers; wireless speaker microphones; audio dubbing apparatus; digital converters; digital to analogue converters; digital audio converters; digital to analogue audio converters; digital to digital audio converters; distribution boxes; data conversion apparatus and instruments; high resolution audio equipment; up samplers; digital up samplers; hi-fi equipment; hi-fi stereo systems; high fidelity apparatus; electronic power supplies; digital processors; audio to digital discs; recording discs in digital form; digital music provided from MP3 websites on the internet; engineering design software; parts and fittings for all of the aforementioned goods