Pandora Media's founder returns as CEO; shares fall

Online music streaming service Pandora Media Inc appointed founder Tim Westergren as its chief executive to replace Brian McAndrews, who left the company on Monday, sending its shares down 10 percent. The company also appointed independent board member Jim Feuille as chairman and promoted chief strategy officer Sara Clemens to chief operating officer. Westergren, who co-founded the service in 2000, earlier served as the company's CEO from May 2002 to July 2004.