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Scott Greenstein (born in 1959) is president and chief content officer of Sirius XM Radio. He leads the programming and advertising sales of the largest radio company by revenue and one of the largest subscription media companies in the world. Since Greenstein joined SiriusXM in 2004, the company’s programming lineup has expanded to include over 140 channels of commercial-free music, sports, news, comedy, talk and entertainment, broadcasting on the company’s satellite platform as well as its online streaming service, SiriusXM Internet Radio.
Under Greenstein, SiriusXM has pioneered many new channels and formats. He also led SiriusXM's signing and renewing of key agreements with the National Football League, Major League Baseball, NASCAR, the National Basketball Association, the National Hockey League and Premier League soccer.
Before SiriusXM, Greenstein was Chairman of USA Films. During his tenure, the studio released numerous films, including Steven Soderbergh's Traffic, Spike Jonze’s Being John Malkovich, Robert Altman’s Gosford Park, and the Coen Brothers’ The Man Who Wasn't There. Greenstein also served as Co-President of October Films, where he was instrumental in acquiring, marketing and releasing such films as The Apostle and executive producer Steven Spielberg’s Academy Award-winning documentary The Last Days.
In 2009, Greenstein was awarded the First Knight of the Royal Order of the Polar Star by the King of Sweden, for his contributions in promoting Swedish music and culture in North America. 
- Ross Johnson, "Studio Wars Honed Skills Used to Nab Radio Star," New York Times, October 11, 2004.
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- "Beauty leads wide open Oscar field", New York Times Accessed April 22, 2014.
- "LIFEbeat Honors Sirius Satellite Radio’s Scott Greenstein," LIFEbeat Annual Report 2006, June 21, 2006, p. 13.