XM Canada to offer most channels in satellite radio

NEWS RELEASE

XM CANADA

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XM Canada grows to 120 channels

TORONTO and MONTREAL, March 12 - XM Canada (TSX: XSR) today
announced it will be increasing its channel offering to 120 channels - the most channels, the most choice, the most variety - in Canada.

Effective April 1, XM Canada subscribers will receive even more of the best in commercial-free music, compelling talk, comedy, entertainment and exciting sports.

With almost 70 commercial-free music channels, XM Canada now offers more music than any other satellite radio provider in Canada.

In addition, XM Canada has added to its already captivating talk lineup with big names in news including Bloomberg Radio, Fox News Talk and Family Talk.

XM Canada will also bring college sports to Canadians by offering the most U.S. college football and basketball coverage on Canadian satellite radio.

XM Canada will be adding two new Canadian channels, XM Scoreboard and Calendrier Sportif, which will be produced in Canada and will provide the latest and most up-to-date scores and schedules available from your favourite sporting events around the world.

These latest channels will provide the perfect addition to XM Canada's NHL programming which covers every single NHL
game and is exclusive to XM as of July 2007.

"We are thrilled to offer our customers even more choice and premium content than ever before and all at the current price of $14.99," said Stephen Tapp, president and chief operating officer of XM Canada. "XM Canada once
again leads the industry by offering the most music, the best talk and hottest entertainment around. We have now added even more punch to an already powerful lineup of content."

New commercial-free music channels:

- Cinemagic: Relive movie moments

- Hitlist: The hits - Top 40 and beyond

- Enlighten: Southern gospel

- The Groove: Old School R&B

- Fuego: The hottest sounds in Latin music

- Aguila: A celebration of regional Mexican music

- Caliente: A tropical paradise - salsa, merengue, bachata and more

- VOX: The magic of the human voice - opera

Plus, the best in talk programming, including:

- Fox News Talk: Talk news like only FOX can give you

- Bloomberg Radio: The world's capital markets

- CNN Headline News: News every 15 minutes

- C-SPAN: Government hearings and public affairs

- Family Talk: Christian talk and entertainment

- ACC College Sports: Atlantic Coast Conference football and basketball

- SEC College Sports: Southeastern Conference football, basketball & more!

- XM Scoreboard: Sports scores, summaries and schedules

- Calendrier Sportif: 24 hour sports schedules of major sporting events

About Canadian Satellite Radio Holdings Inc.

Canadian Satellite Radio Holdings Inc. (TSX: XSR) operates as XM Canada(TM) through its subsidiary, Canadian Satellite Radio Inc.

XM is Canada's premium digital audio entertainment and information company with the best satellite coverage in the country and offering a unique lineup of premier Canadian and international content.

XM Canada offers listeners up to 120 channels of unique and exclusive programming including the most NHL(TM) games, PGA TOUR(TM) and Major League Baseball(TM) coverage, the deepest play list, and news, talk, sports, entertainment and children's programming.

After this season, XM will become the exclusive provider of NHL games on satellite radio.

Acura, Buick, Cadillac, Chevrolet, General Motors, GMC, Harley Davidson, Honda, Hummer, Hyundai, Infiniti, Lexus, Nissan, Pontiac, Toyota, Saab, Saturn, Suzuki and
Subaru will offer XM radios in more than 115 different models of vehicles for model year 2007.

XM has an exclusive Canadian license from U.S.-based XM Satellite Radio Inc. (NASDAQ: XMSR), the leading satellite radio provider in the U.S. with more than 7.6 million subscribers.

XM is offered on TELUS Mobile Radio(TM) and is the exclusive music channel provider for Air Canada.

A live stream of selected XM Canada channels is available via a three-day complimentary trial of XM Radio Online at http://listen.xmradio.ca

To subscribe to XM Canada online or for more information about XM Canada's programming lineup and radio choice, visit www.xmradio.ca

To find out more about Canadian Satellite Radio Inc. (TSX: XSR), visit our website at www.cdnsatrad.com

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