9 Downloadable computer software for use in the creation and playing of auralizations; computer hardware; downloadable and recorded computer programs for use in the creation and playing of auralizations; recorded content, namely, prerecorded CD-ROMs and downloadable audio files featuring auralizations; distance and dimension measuring apparatus; noise meters, namely, sound level meters; noise cancelling apparatus, namely, noise cancelling headphones; noise level meters; sound locating instruments, namely, acoustic mirrors, acoustic dishes and sonar; sound measuring apparatus, namely, sound level meters; acoustic meters; sound reproduction apparatus for the purpose of creating and playing auralizations; downloadable computer software for recording sound for the purpose of creating auralizations; downloadable computer software for measuring sound; downloadable computer software for simulating, creating and editing sounds; apparatus and instruments for simulating sound for the purpose of creating and playing auralizations; sound recording equipment, namely, microphones; downloadable interactive databases for the storing and easy retrieval of auralizations