SKYBOX(TM) Unveiled: First Integrated Boom Box Featuring XM Satellite Radio, AM/FM Tuner and CD/MP3 Player

		XM SATELLITE RADIO AUDIOPHASE SKYBOX The Audiophase SKYBOX (MSRP $199.00) is the first product to feature an integrated XM Satellite Radio receiver, AM/FM tuner, and CD/MP3 player in a single device. The SKYBOX will be available at Best Buy stores this fall. (PRNewsFoto)[AG] WASHINGTON, DC USA

		XM SATELLITE RADIO LOGO XM is transforming radio, an industry that has seen little technological change since FM, almost 40 years ago. XM's programming features 100 coast-to-coast digital channels: 71 music channels, more than 30 of them commercial-free, from hip hop to opera, classical to country, bluegrass to blues; and 29 channels of sports, talk, children's and entertainment. For the first time on radio XM brings to the car the same diverse selection of news sources available in the home on cable and DIRECTV. (PRNewsFoto)[JL TK RV] WASHINGTON, DC USA

Exclusively Available at Best Buy Stores, New Product Offers Complete On-The-Go Audio Experience WASHINGTON, Aug. 19 /PRNewswire-FirstCall/ -- XM Satellite Radio (Nasdaq: XMSR), the nation's leading satellite radio company with more than 2.1 million subscribers, today announced the introduction of the Audiophase SKYBOX -- the industry's first integrated portable satellite radio boom box. (Photo: http://www.newscom.com/cgi-bin/prnh/20040819/DCTH030 Logo: http://www.newscom.com/cgi-bin/prnh/20000724/XMSATLOGO ) The SKYBOX is the first product to include an XM Satellite Radio receiver, AM/FM tuner and CD/MP3 player in a single device. The SKYBOX (expected MSRP $199.00) will be available to Best Buy customers this fall in time for the 2004 holiday season. "Best Buy is thrilled to offer SKYBOX, an innovative way to listen to satellite radio," said Best Buy's Mike Manske, Business Team Leader of Mobile Electronics. "We are excited to once again bring a first-of-its-kind product to meet our customers' evolving technology needs." SKYBOX features a full-feature CD player, MP3 playback capabilities, AM/FM tuner and a built-in XM Satellite Radio receiver with 30 channel presets for quick access to your favorite XM channels. In addition, SKYBOX includes a multi-purpose two-line name display listing the XM channel name and number, as well as the artist name and song title. SKYBOX also has a memory feature that can remember the artist name and title of the song or programming for up to 15 entries. Subscribers can recall artist names and song titles at the touch of a button. Each SKYBOX comes equipped with a wireless remote. "XM Satellite Radio is committed to providing consumers with the programming, products and features they want," said XM Satellite Radio Senior Vice President of Product Marketing and Distribution Dan Murphy. "By combining XM's state-of-the-art digital audio technology, a CD player, MP3 player and AM/FM tuner into one complete device, the SKYBOX offers the complete on-the-go audio experience." About XM Satellite Radio XM is America's #1 satellite radio service with more than 2.1 million subscribers. Broadcasting live daily from studios in Washington, DC, New York City and Nashville, Tennessee at the Country Music Hall of Fame, XM's 2004 lineup includes more than 120 digital channels of choice from coast to coast: 68 one-hundred-percent commercial-free music channels, featuring hip hop to opera, classical to country, bluegrass to blues; 34 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. Affordable, compact and stylish XM satellite radio receivers for the home, the car, the computer and boom boxes for "on the go" are available from retailers nationwide. In addition, XM is available in more than 80 different 2004 car models. XM is a popular factory-installed option on more than 40 new General Motors models, as well as a standard feature on several top-selling Honda and Acura models. JetBlue Airways and AirTran Airways passengers will be able to listen to XM's programming in-flight later in 2004. This fall, XM will offer XM NavTraffic, a new service that will provide real-time traffic information for vehicle navigation systems. For more information about XM, 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 3-15-04. Copies of the filing are available upon request from XM Radio's Investor Relations Department.