There's a new sound on the air and it's emanating from a source deep in the hearts and minds of Americans across the country. "LPFM: The People's Voice" chronicles the extraordinary story of a low power, low cost radio service that withstood the rigors of Capital Hill and special interest attacks. Today LPFM is sending out a signal that is loud and clear. Freedom of speech has a new ally and it's LPFM. Documentary aired on NBC in 2004.