Theater loudspeaker systems comprising main loudspeakers, surround loudspeakers, center loudspeakers, subwoofers, sound amplifiers and crossovers; home-theater-in-a-box; home loudspeaker systems comprising main loudspeakers, surround loudspeakers, center loudspeakers, subwoofers, sound amplifiers and crossovers; televisions; sound amplifiers; audio-video receivers; stereo speakers; DVD players, including high-definition DVD players; CD players; audio and video interconnecters; speaker cables; audio-video equalizers; projection screens; video scalars; theater projection equipment, namely film projectors and digital projectors; automobile stereos; computer software and hardware for audio and audiovisual recording, display, and playback; video game discs; and DVDs featuring audiovisual works, films, entertainment videos, television programs, video games and music; headphones; video game consoles for use with an external display screen or monitor; network controllers; set top boxes; video display screens; video projectors; computer monitors