ast week, scientists at the Lawrence Berkeley National Laboratory were able to listen to a play back of what is believed to be the earliest mechanical sound recording. Made in 1860 by the French typesetter Édouard-Léon Scott de Martinville, the "phonautogram" features the voice of a woman, believed to be Scott's daughter, singing a line from the French folk song, "Au Clair de la Lune." (Digital Media Wire)