XM to Broadcast Live from 2008 Winter Music Conference in Miami

XM Nominated for “Best Radio Station" and “Best Radio Mix Show DJ" at 2008 International Dance Music Awards

Washington, D.C., March 6, 2008 – XM will broadcast live from the 2008 Winter Music Conference (WMC) in Miami, Florida, it was announced today. Beginning Thursday, March 27, XM’s house and progressive dance channel, “The Move" (XM 80), and its dance hits channel “BPM" (XM 81) will bring dance and electronic music fans performances from WMC and its official closing event, the legendary Ultra Music Festival. Now in its 23rd year, WMC draws professionals from every aspect of the dance music industry, including artists, DJs, producers, programmers and more, for three days of performances, awards shows and festivals.

• On Thursday, March 27 from 4pm to 12 midnight ET, BPM will broadcast live direct from the world-famous Nikki Beach on South Beach Miami, as Armani Exchange and Juicy Music present “Juicy Beach,�? featuring 30 of the world’s best DJ’s, including Robbie Rivera, Deadma5, Benny Benassi, Axwell, among others.

• On March 29, The Move and BPM will be live from the renowned Ultra Music Festival in Miami’s Bicentennial Park. Ultra Music Festival is the nation’s largest dance event of the year and features 14 stages with more than 100 of the world’s best DJ’s. Tiesto, Armin van Buuren, DJ Ferry Corsten, Paul van Dyk, Carl Cox and many others are among those scheduled to perform.

Later this spring, XM will feature the best of WMC performances with the exclusive “Miami Rewind" weekend on BPM, including sets by top-ranked DJ Ferry Corsten recorded at SPACE Miami, and Miami legends Oscar G. and Ralph Falcon recorded at Cameo Miami as part of Nervous Records and DJ Times present “MURK-Made In Miami."

In addition to its comprehensive broadcast coverage of WMC and the Ultra Music Festival, XM has been nominated for two International Dance Music Awards (IDMA). XM’s BPM has been nominated for “Best Radio Station" of the year and XM’s DJ Armando has been nominated as “Best Radio Mix Show DJ" for his weeknight show, “Addiction," on BPM.

Complete programming information for XM’s coverage of 2008 Winter Music Conference, including artists and detailed broadcast schedules will soon be available online at http://www.xmradio.com/miami08.

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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, 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/.

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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, 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 3-1-07. Copies of the filing are available upon request from XM Radio's Investor Relations Department.