SIRIUS Appoints New Board Member

James F. Mooney to Fill Vacancy

NEW YORK, July 24 -- SIRIUS , known for delivering the very best in commercial-free music and premium audio entertainment to cars and homes across the country, today announced that James F. Mooney has been elected to serve on the company's board of directors.

Mr. Mooney, 48, is Chairman of the board of directors of NTL Incorporated, a cable television company with operations in the United Kingdom and Ireland. Mr. Mooney was appointed Chairman of NTL in March 2003. Prior to joining NTL, Mr. Mooney was the Executive Vice President and Chief Operating Officer of Nextel Communications Inc. Prior to joining Nextel, Mr. Mooney was the Chief Executive Officer and Chief Operating Officer of Tradeout Inc., an asset management firm owned jointly by General Electric Capital, Ebay Inc. and Benchmark Capital. Prior to Tradeout, Mr. Mooney was the Chief Financial Officer/Chief Operating Officer at Baan Company, a business management software provider. From 1980 until 1999, Mr. Mooney held a number of positions with IBM Corporation, including Chief Financial Officer of the Americas.

About SIRIUS

SIRIUS is the only satellite radio service bringing listeners more than 100 streams of the best music and entertainment coast-to-coast. SIRIUS offers 60 music streams with no commercials, along with over 40 world-class sports, news and entertainment streams for a monthly subscription fee of only $12.95, with greater savings for upfront payments of multiple months or a year or more. Stream Jockeys create and deliver uncompromised music in virtually every genre to our listeners 24 hours a day. Satellite radio products bringing SIRIUS to listeners in the car, truck, home, RV and boat are manufactured by Kenwood, Panasonic, Clarion and Audiovox, and are available at major retailers including Circuit City, Best Buy, Car Toys, Good Guys, Tweeter, Ultimate Electronics, Sears and Crutchfield. SIRIUS is the leading OEM satellite radio provider, with exclusive partnerships with DaimlerChrysler, Ford and BMW. Automotive brands currently offering SIRIUS radios in select new car models include BMW, MINI, Chrysler, Dodge, Jeep(R), Nissan, Infiniti and Mazda. Automotive brands that have announced plans to offer SIRIUS in select models include Ford, Lincoln, Mercury, Mercedes-Benz, Jaguar, Volvo, Audi, Volkswagen, Land Rover and Aston Martin.

Click on www.SIRIUS.com to listen to SIRIUS live, or to find a SIRIUS retailer or car dealer in your area.