MIKE POSNER TO LAUNCH EXCLUSIVE WEEKLY SHOW ON SIRIUS XM

Singer of the summertime hit “Cooler Than Me” will play the latest new music, mix some of his own, and describe life as he transitions from college student to pop star

NEW YORK – July 30, 2010 – SIRIUS XM Radio (NASDAQ: SIRI) today announced the launch of a weekly show hosted by Mike Posner, the young phenom and mixtape superstar, whose music has risen to the top of the charts.

Posner – singer, songwriter, producer and recent Duke University graduate—received critical acclaim when he self-released two mixtapes and signed a record deal with J Records while still in school. The Detroit native received his diploma from Duke as his song, “Cooler Than Me,” was rising on the Billboard charts and he was preparing to hit the road with the Warped Tour. The smash single “Cooler Than Me” has sold more than 1.1 million downloads to date and risen to No. 6 on Billboard’s Hot 100.

His debut album, 31 Minutes to Takeoff, will be released on August 10. Posner co-wrote and/or co-produced every track on 31 Minutes to Takeoff, which also features collaborations with Benny Blanco (Ke$ha, Katy Perry, 3OH!3), Boyz II Men, Travis Barker and songwriter Teddy Riley.

His weekly SIRIUS XM show, The Mike Posner Show, debuts on September 10 on SIRIUS XM’s Faction (SIRIUS channel 28/XM channel 52), SIRIUS XM’s 100% commercial-free music and action sports lifestyle channel. The show will air Friday nights at 9:00 pm ET. On his SIRIUS XM Faction show, Posner will play the jams he likes and talk about his life as he navigates the best-selling music charts and his newfound popularity.

“It is going to be so fun to document what happens in my life in such a refreshing manner. Plus, I can’t wait to show people all the cool music they’ve been missing,” said Posner. “My show is going to have the best playlist ever!”

“When SIRIUS XM first started playing Mike’s music a few months ago, we knew we had to do something more to bring this exciting new talent to a national audience,” said Scott Greenstein, President and Chief Content Officer of SIRIUS XM. “Already having found a large online audience for his unmistakable and unduplicated sound, SIRIUS XM will bring his unique voice to millions of car radios every single week.”

Posner recently announced his first headlining club tour, The Up In The Air Tour, produced by Live Nation. Fans can receive exclusive access to pre-sale tickets for The Up In The Air Tour when they pre-order 31 Minutes To Takeoff at www.MikePosner.com. The Up In The Air Tour will make 22 stops at premier clubs throughout the country, with shows confirmed through October 15 in Toronto, Canada at the Mod Club.

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About SIRIUS XM Radio

SIRIUS XM Radio is America’s satellite radio company delivering to subscribers commercial-free music channels, premier sports, news, talk, entertainment, and traffic and weather.

SIRIUS XM Radio has content relationships with an array of personalities and artists, including Howard Stern, Martha Stewart, Oprah Winfrey, Rosie O’Donnell, Jamie Foxx, Barbara Walters, Opie & Anthony, Bubba the Love Sponge®, Bob Edwards, Chris “Mad Dog” Russo, Jimmy Buffett, The Grateful Dead, Willie Nelson, Bob Dylan and Tom Petty. SIRIUS XM Radio is the leader in sports programming as the Official Satellite Radio Partner of the NFL, Major League Baseball®, NASCAR®, NBA, NHL®, and PGA TOUR® and major college sports.

SIRIUS XM Radio has arrangements with every major automaker. SIRIUS XM Radio products are available at shop.sirius.com and shop.xmradio.com, and at retail locations nationwide, including Best Buy, RadioShack, Wal-Mart and independent retailers.

SIRIUS XM Radio also offers SIRIUS Backseat TV, the first ever live in-vehicle rear seat entertainment featuring Nickelodeon, Disney Channel and Cartoon Network; XM NavTraffic® service for GPS navigation systems delivers real-time traffic information, including accidents and road construction, for more than 80 North American markets.

This communication contains “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements include, but are not limited to, statements about future financial and operating results, the combined company’s plans, objectives, expectations and intentions with respect to future operations, products and services; and other statements identified by words such as “will likely result,” “ are expected to,” “anticipate,” “believe,” “plan,” “estimate,” “intend,” “will,” “should,” “may,” or words of similar meaning. Such forward-looking statements are based upon the current beliefs and expectations of SIRIUS XM’s management and are inherently subject to significant business, economic and competitive uncertainties and contingencies, many of which are difficult to predict and generally beyond the control of SIRIUS and XM. Actual results may differ materially from the results anticipa ted in these forward-looking statements.

The following factors, among others, could cause actual results to differ materially from the anticipated results or other expectations expressed in the forward-looking statement: general economic conditions; our dependence upon automakers and other third parties, the substantial indebtedness of SIRIUS and XM; the useful life of our satellites; and our competitive position versus other forms of audio and video entertainment. Additional factors that could cause SIRIUS’ and XM’s results to differ materially from those described in the forward-looking statements can be found in SIRIUS’ Annual Report on Form 10-K for the year ended December 31, 2009 and XM’s Annual Report on Form 10-K for the year ended December 31, 2009, which are filed with the Securities and Exchange Commission (the “SEC”) and available at the SEC’s Internet site (http://www.sec.gov). The information set forth herein speaks only as of the date hereof, and SIRIUS and XM disclaim any intention or obligation to update any forward looking statements as a result of developments occurring after the date of this communication.
P-SIRI

Contacts for SIRIUS XM Radio:
Patrick Reilly
212.901.6646
patrick.reilly@siriusxm.com

Samantha Bowman
212.901.6644
samantha.bowman@siriusxm.com