Endoscope and method comprise a micro endoscope with insertion end that is about 1-2 millimeters in outer diameter and includes an optical fiber image bundle, two optical laser fibers, two illumination source optical fiber bundles, along with three focusing lenses for image bundle and laser fibers. A diffusion restriction can be placed into the diffusion path to assist this process and the path then opened to provide rapid diffusion of the thus concentrated germicide. A preferred plurality of audio signals is acoustically played on the entertainment sound system. A method for coupling a shaft member to a driveline component is also provided.