Every Major League Baseball Game for Every Team Airs Nationwide on XM Radio in 2008, Starting March 25

NEWS RELEASE

Every Major League Baseball Game For Every Team Airs Nationwide on XM Radio in 2008, Starting March 25

3/17/2008

WORLD SERIES CHAMP BOSTON PLAYS OAKLAND AT TOKYO DOME TO OPEN MLB SEASON

XM TO AIR RED SOX - A'S SEASON OPENER IN ENGLISH AND JAPANESE

WASHINGTON, March 17 /PRNewswire/ -- Major League Baseball will open the 2008 regular season on March 25 with the World Series champion Boston Red Sox and Oakland A's in Japan. XM Satellite Radio will air three live broadcasts of the game, including one broadcast in Japanese.

(Photo: http://www.newscom.com/cgi-bin/prnh/20080317/NEM030 ) (Logo: http://www.newscom.com/cgi-bin/prnh/20070313/XMLOGO )

The Red Sox will play the A's in front of a sold-out crowd at the Tokyo Dome at 6:05 am ET. XM will air the Red Sox radio broadcast, the A's broadcast, and a Japanese-language broadcast on three separate channels.

XM airs every MLB game for every team throughout the regular season and postseason. XM carries the team broadcasts so fans can hear legendary announcers like Vin Scully, Bob Uecker and Harry Kalas. XM is the exclusive home of the MLB Home Plate channel, the nation's only talk radio channel devoted to the sport 24 hours a day, and the MLB En Espanol channel, which offers games and baseball talk radio in Spanish.

1 "There is no sport better suited to radio than baseball," said Eric Logan, XM executive vice president, programming. "This year's season opener is especially exciting because the game is being played in Tokyo. With the time difference, a lot of fans will be able to hear the game on XM while they drive to work. This is our fourth season as the official satellite radio network of MLB. Whether you're a Yankees fan living in Los Angeles or a Cubs fan vacationing in Miami, you can hear the games for all thirty teams on your XM radio."

For Opening Night on March 30, the Washington Nationals will play their first game at Nationals Park, their brand- new stadium near the U.S. Capitol. The Nationals will host the Atlanta Braves starting at 8:05 pm ET. XM will air the Nationals broadcast, the Braves broadcast, and the ESPN Radio broadcast of the game. The MLB Home Plate channel will be live from Nationals Park throughout the day.

The traditional Opening Day on March 31 will bring 14 baseball games to the XM roster, starting with the New York Yankees' season opener against the Toronto Blue Jays at 1:05 pm ET. This will be the last Opening Day game at Yankee Stadium, and the MLB Home Plate channel will report live from the site.

A weekly MLB game schedule is available online at http://www.xmradio.com/mlbschedule. Every game for every team during the regular season and postseason is heard nationwide on XM channels 176 to 189. MLB Home Plate is XM channel 175. MLB En Espanol is channel 174.

About XM

XM (NASDAQ: XMSR) is America's number one satellite radio company with more than 9 million subscribers. Broadcasting live daily from studios in Washington, DC, New York City, Chicago, Nashville, Toronto and Montreal, XM's 2008 lineup includes more than 170 digital channels of choice from coast to coast: commercial-free music, premier sports, news, talk radio, comedy, children's and entertainment programming; and the most advanced traffic and weather information.

XM, the leader in satellite-delivered entertainment and data services for the automobile market through partnerships with General Motors, Honda, Hyundai, Nissan, Porsche, Subaru, Suzuki and Toyota is available in 140 different vehicle models for 2008. XM's industry-leading products are available at consumer electronics retailers nationwide. XM programming is also available through XM Radio Online, the exclusive home on the Internet for XM's commercial-free music channels; as downloads of original XM shows via podcasts from XM's Web site or the Apple's iTunes Store, and as streams of commercial- free XM music channels to AT&T and Alltel wireless customers through XM Radio Mobile. For more information about XM hardware, programming and partnerships, please visit http://www.xmradio.com/. All programming is subject to change.

Factors that could cause actual results to differ materially from those in the forward-looking statements in this 2 press release include demand for XM Satellite Radio's service, our significant expenditures and losses, our dependence on technology and third party vendors, our potential need for additional financing, the health of our satellites, the impact of our proposed merger with Sirius, our substantial indebtedness as well as other risks described in XM Satellite Radio Holdings Inc.'s Form 10-K filed with the Securities and Exchange Commission on 2- 26-08. Copies of the filing are available upon request from XM Radio's Investor Relations Department.

Photo: NewsCom: http://www.newscom.com/cgi-bin/prnh/20080317/NEM030 http://www.newscom.com/cgi-bin/prnh/20070313/XMLOGO AP Archive: http://photoarchive.ap.org/ PRN Photo Desk, [email protected] SOURCE: XM

CONTACT: David Butler of XM Satellite Radio, +1-202-380-4317, [email protected]

Web site: http://www.xmradio.com/ http://www.xmradio.com/mlbschedule