Downloadable computer application software for cellular or mobile phones and mobile multimedia and communications devices; devices that allow audio from cellular or mobile phones and mobile multimedia and communications devices to be heard on stereo systems; accessories for cellular or mobile phones and mobile multimedia and communications devices in the nature of headsets and devices for hands-free use such as earphones and headphones; accessories for cellular or mobile phones and mobile multimedia and communications devices in the nature of chargers, batteries, holders, docking stands, and cables; remote controls for electronic communications and telecommunications apparatus and instruments