Audio will be available later today. Facebook Twitter Google+ Email April 19, 199912:00 AM ET Heard on Morning Edition Since the method used for transmission is standard stereo, station operators are not required to alter their daily procedures. However, your station must broadcast in stereo for your listeners to have the option of listening in Surround. Facebook Twitter Google+ Email We no longer support commenting on NPR.org stories, but you can find us every day on Facebook, Twitter, email, and many other platforms. Learn more or contact us.