Abdominal belt containing built-in speakers for purposes of transmitting music/sounds/educational material to a fetus and built-in pockets in which to carry audio transmitters; Audio amplifiers; Audio cassette decks for automobiles; Audio cassette recorders; Audio circuit boards; Audio equipment for vehicles, namely, stereos, speakers, amplifiers, equalizers, crossovers and speaker housings; Audio mixers; Audio processing equipment, namely, limiters and compressors; Audio speaker enclosures; ...