With all the distractions that are part of our waking hours, it is no wonder that the simplest sounds of an ordinary day are overlooked and taken for granted. Sounds like the crackling of ice, raindrops on a rooftop, the rumble of an approaching storm, and even turning the page of a book are so commonplace that we seldom--if at all--take time to appreciate them. Yet, when the ability to hear these everyday sounds is taken away--as in Marsha Engle's...