Acoustic conduits; [ Acoustic couplers; Acoustic membranes; Batteries, electric; Camcorders; Computer programs for using the internet and the worldwide web; Computer operating programs; ] Computer operating software; [ Computers; Earphone accessories, namely, earphone cushions, earphone pads, cord management systems, earphone cases, and earphone extension cords; Erasing magnets; Headphones; ] Loudspeakers; Megaphones; Microphones; [ Microprocessors; Record players; Recording and playing devices for sound and image carriers; ] Sound transmitting apparatus; [ Video screens; Blank integrated circuit cards; Cabinets for loudspeakers; Computer hardware and software system for remotely monitoring environmental conditions and controlling devices within a building, facility, grounds, or designated spatial area; Downloadable computer game programs; ] Horns for loudspeakers [ ; LED drivers; Needles for record players; Phonograph records featuring music; Recording and playing devices for sound and image carriers; Tape recorders ]