Digital signal processing chips; integrated circuits, computer hardware and computer software to control and improve computer and audio equipment sound; computer software applications (downloadable); computer programs (downloadable software); portable hardware to control and improve audio equipment sound; apparatus for processing audio and/or visual signals; sound recording apparatus; sound reproduction apparatus; sound transmitting apparatus; pre-recorded digital and electronic media devices featuring interactive sound and visual recordings in the nature of music, and also featuring images, audio, video and audio-visual content in the fields of personal gaming and music; interactive computer software for computer games; amplifiers; MP3 players; MP4 players; sound cards; earphones; headphones; headphone systems, consisting of headphones, stereo cables and amplifiers; subwoofers; loud speakers; wireless speakers; USB hubs and adapters, remote controls for radios, televisions, and stereos; instrument and materials for transmitting and/or receiving and/or recording sound and/or visual images, namely, digital media streaming devices; consumer electronics and downloadable digital music all provided on-line from databases or from the Internet or from any other communications network; digital music downloadable from the Internet