Even with i-pods, laptops, cd players, radio, sometimes you want to hear what's on TV but are doing something else so do not want the picture.
Be great if all TV manufacturers have a music mode. No picture made or shown - save power! I know 1 does, be good if its a standard feature like the mute button! Conserve power and enjoy your tv
Thank you Wikipedia for all the free information and with the the history tab I can see when, by who an an article was edited and what it was like before --> easily make out fake information!