miniature wireless radio frequency transmitters for use with analog and digital audio devices, namely, CD players, cassette tape players, mini-disk players, MP3 players, and MPEG4 audio players; and power supplies, application-specific integrated circuits, and printed circuit board assemblies for miniature wireless radio frequency transmitters for use with analog and digital audio, and not for use with transmitters for wireless connection to musical instruments or electronic devices for real-time electronic communication with one or more musical instruments