9 downloadable computer software for controlling audio parameters for use in the field of automotive audio systems, headphones, and home entertainment sound systems; downloadable mobile computer application software for controlling audio parameters for use in the field of automotive audio systems, headphones, and home entertainment sound systems; downloadable mobile applications for controlling audio parameters for use in the field of automotive audio systems, headphones, and home entertainment sound systems; digital sound processors; sound tuners; sound equalizers; audio equipment, namely, stereos, speakers, amplifiers, equalizers, crossovers and speaker housings; automatic radio signal tuners