compact disc players and recorders; video disc players and recorders; compact disc changers; television monitors for automobiles; video monitors for automobiles; television monitors and video monitors for automobile navigation systems; radio receivers; amplifiers; equalizers; sound processors, including surround-sound processors; digital signal processors; digital/analog converters and frequency processors for audio and visual apparatus; audio speakers; television receivers; digital television tuners; navigation apparatus for determining or signaling automobile location, the location of sites, and travel routes, time, traffic conditions, and other information; navigation apparatus with radio tuners, disc players and displays for automobiles; video monitors for automobile navigation systems; overhead monitors for automobiles; overhead monitors with DVD players for automobiles; mobile cameras; DVD players incorporating video monitors; DVD players incorporating television monitors; disc players with radio tuners and displays; hardware for mounting audio and video equipment in vehicles sold as a unit with the aforementioned audio and video equipment for vehicles