Personal headphones for use with sound transmitting systems; Accessories for personal audio systems, namely, cases; Personal battery-powered, low power amplifiers; Personal headphones with music storage capability; Portable audio speakers; In-ear monitors not for medical purposes; Wired, wireless and low power USB-capable audio speakers; Wired, audio speaker enclosures; Audio amplifiers; Audio mixers; Sound systems comprising wired, audio speaker enclosures, audio amplifiers, audio mixers and structural parts thereof; Electronic software updates, namely, downloadable computer software and associated data files for updating embedded computer software in audio systems, provided via computer and communication networks; wired and wireless fit-in-ear earphones; Wired and wireless headphones; Wired and wireless over-the-ear earphones; Wired and wireless ear buds; Interchangeable earphone and dongles in the nature of interfaces for computers and computer hardware for connection to computers to access wireless broadband communication services and protected software; Cases for personal amplifiers, headphones, earphones, ear buds, audio speakers, in-ear monitors not for medical purposes, audio mixers and cables associated with all of the foregoing equipment; Earphone tips, ear bud covers, headphone covers, replacement earphone and headphone cables, replacement earphone tips, replacement ear bud covers, replacement headphone covers, replacement dongles in the nature of interfaces for computers and computer hardware for connection to computers to access wireless broadband communication services and protected software and data; and Power access tuning ports for use with electrical control panels for connecting multiple data electrical devices; Biometric devices attached to, or worn directly on the human body, or placed inside of audio devices, which identify, measure and react to heart rate and other bodily functions