R.I.P. to a true visionary!
http://www.cbsnews.com/8301-205_162-57602766/ray-dolby-american-audio-pioneer-dies-at-80/ (http://www.cbsnews.com/8301-205_162-57602766/ray-dolby-american-audio-pioneer-dies-at-80/)
I never did figure out what that little button on my tape deck did.