Xm Satellite Radio On-Air Sports Commentator Rob Dibble Expand His Broadcast Roster with Best Damn Sports Period

NEWS RELEASE

XM SATELLITE RADIO ON-AIR SPORTS COMMENTATOR ROB DIBBLE EXPAND HIS BROADCAST ROSTER WITH BEST DAMN SPORTS PERIOD

4/7/2005

Washington D.C., April 07, 2005 -- XM Satellite Radio, the nation's leading provider of satellite radio with more than 3.7 million subscribers, is proud to announce that Rob Dibble, leading sports analyst and host of MLB Home Plate's "The Show" (XM Channel 175), has been selected as the newest on-air host of FOX Sports' "Best Damn Sports Show Period." In addition to XM's live, all-new baseball show, Dibble will lend his no holds barred, passionate analysis of sports to the "Best Damn Sports Show Period" line up beginning April 11.

"The XM team is excited for Rob and congratulate him on this new appointment," said Eric Logan, Executive Vice President of Programming for XM. "The new stint with 'Best Damn' is a great opportunity for him to continue to share his passion in-depth insights about baseball and offers sports fans a double dose of Dibble - live daily on XM's MLB Home Plate channel in the afternoon and on television screens in the evening."

Beginning next week, Dibble will broadcast the MLB Home Plate show from studios in Los Angeles along side his co- host, MLB on FOX's Kevin Kennedy, who has been based on the West Coast since their program debuted in February of this year. Dibble and Kennedy will continue to bring baseball fans their live, fast-paced program, "The Show," which features top guests, news and game updates from around the league and listener call-ins every afternoon from 3 p.m. - 6 p.m. ET on MLB Home Plate, XM Channel 175.

XM is the leading provider of live sports in satellite radio. XM is the official satellite radio network of Major League Baseball, NASCAR, the PGA TOUR, the Indy Racing League, and the college sports conferences Atlantic Coast

1 Conference (ACC), Big Ten, and Pac-10. XM also carries ESPN Radio, ESPNews Radio, Fox Sports Radio, and Sporting News Radio. The latest models of XM radio receivers, such as the portable Delphi XM2go MyFi radio, have sports tickers that display current scores for professional and college sports teams.

About XM Satellite Radio XM (NASDAQ: XMSR) is America's number one satellite radio service with more than 3.77 million subscribers. Broadcasting live daily from studios in Washington, DC, New York City and Nashville at the Country Music Hall of Fame, XM's 2005 lineup includes 152 digital channels of choice from coast to coast: 67 commercial-free music channels, featuring hip hop to opera, classical to country, bluegrass to blues; 64 channels of premier sports, talk, comedy, children's and entertainment programming; and 21 channels of the most advanced traffic and weather information for major metropolitan areas nationwide. XM Satellite Radio is the satellite radio leader in sports programming, offering thousands of live sporting events every year. XM is the official satellite radio network for Major League Baseball, NASCAR, the Indy Racing League, the PGA TOUR, and the college sports conferences ACC, Pac-10, and Big Ten. XM was named Best Radio Service at the 2004 Billboard Digital Entertainment Awards.

XM, the leader in satellite-delivered entertainment and data services for the automobile market through partnerships with General Motors, Honda, Toyota, Hyundai, Nissan and Volkswagen/Audi, is available in more than 120 different vehicle models for 2005. XM also is available in Avis, National, and Alamo rental cars. XM is the exclusive in-flight entertainment service for AirTran Airways, and will soon be available on JetBlue flights. Consumers can experience XM over the Internet through XM Radio Online at http://listen.xmradio.com. For more information about XM hardware, programming and partnerships, please visit http://www.xmradio.com.

Factors that could cause actual results to differ materially from those in the forward-looking statements in this press release include demand for XM Satellite Radio's service, the Company's dependence on technology and third party vendors, its potential need for additional financing, as well as other risks described in XM Satellite Radio Holdings Inc.'s Form 10-K filed with the Securities and Exchange Commission on 3-4-05. Copies of the filing are available upon request from XM Radio's Investor Relations Department.

XM Contact: Anne-Taylor Griffith Phone: 202-380-4151 [email protected]