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Clear Channel Worldwide Joins Arbitron's Webcast Ratings As February's Number Two Webcast Network

International Station Jazz FM UK Debuts as Second Ranked Channel. 03.12.02

NEW YORK, March 12, 2002 - Arbitron Inc. (NYSE: ARB) today announced that Clear Channel Worldwide debuted as the second most listened to webcast network in Arbitron's February Webcast Ratings with 3,483,700 aggregate tuning hours (ATH), the sum total of all hours that listeners tune to a given channel or combination of channels.

For the sixth consecutive month, Live365 maintained its number one spot in the February Arbitron network ratings with 6,148,800 ATH. ChainCast Networks/StreamAudio ranked number three with 2,073,800 ATH. Webcast networks are defined as radio station owners that stream their content online or companies that aggregate online audio programming. Webcast networks are ranked according to their total monthly ATH.

February Channel Ratings
United Kingdom-based Jazz FM UK joined Arbitron's February Webcast Ratings and ranked number two with 826,200 ATH. Virgin UK remained the top ranked channel with 893,500 ATH. Classical Station KING-FM ranked third with 535,500 ATH. Clear Channel Worldwide placed 19 of its properties within Arbitron's top 75 channels in February.

Background and Methodology

The rankings included in the February 2002 Arbitron Webcast RatingsSM are based on those stations and channels that have provided Arbitron with access to their server data. The ratings may not reflect all tuning for the measured stations or channels, since Arbitron may have received incomplete or unusable server data.

Arbitron Webcast Ratings debuted with October 1999 data as the world's first streaming media ratings service. Arbitron Webcast Ratings provides ratings for streamed media because webcasters need objective, third-party audience measurement to demonstrate the value of their audiences to agencies and advertisers. Arbitron Webcast Ratings is a server-side measurement, which captures tuning to participating streamed media channels by compiling a near census of Internet tuning sessions.

About Arbitron

Arbitron Inc. (NYSE: ARB) is an international media and marketing research firm serving radio broadcasters, cable companies, advertisers, advertising agencies and outdoor advertising companies in the United States, Mexico and Europe. Arbitron's core businesses are measuring network and local market radio audiences across the United States; surveying the retail, media and product patterns of local market consumers; and providing application software used for analyzing media audience and marketing information data. Arbitron Webcast Services measures the audiences of audio and video content on the Internet, commonly known as webcasts. The Company is developing the Portable People Meter, a new technology for radio, TV and cable ratings.

Arbitron's marketing and business units are supported by a world-renowned research and technology organization located in Columbia, Maryland. Arbitron has approximately 750 full-time employees; its executive offices are located in New York City.

Through its Scarborough Research joint venture with VNU Media Measurement & Information, Arbitron also provides media and marketing research services to the broadcast television, magazine, newspaper and online industries.

(Webcast Channel and Network Ratings lists to follow).

Arbitron Webcast Ratings is a service mark of Arbitron Inc. All other names are the property of their respective owners.

This press release is available on the Arbitron Web site at www.arbitron.com and the KCSA Web site at www.kcsa.com. You may register to receive Arbitron's future press releases or to download a complete Digital Investor Kit™ including press releases, regulatory filings and corporate materials by clicking on the "Digital Investor Kit" icon at www.kcsa.com.

Arbitron Webcast Network Ratings Report
February 2002 - Top 10

Rank Network
ATH
1 Live 365
6,148,800
2 Clear Channel Worldwide
3,483,700
3 ChainCast/StreamAudio
2,073,800
4 SMG PLC (Virgin Radio New Media)*
1,251,100
5 Public Interactive
853,600
6 Classic Radio, Inc.
535,500
7 Entercom Communications
491,500
8 New York Times
352,300
9 MEDIAmazing*
343,400
10 ABC Radio
341,700

*Arbitron has been informed that this channel/station had reporting difficulties or only partial data was given during the reported period. Please contact the webcaster for further information.

Arbitron Webcast Channel Ratings Report
February 2002 - Top 25

Channel URL (Corporate Affiliate) Format ATH
1 Virgin Radio* www.virginradio.co.uk (SMG plc) Hot Adult Contemporary 893,500
2 Jazz FM UK www.jazzfm.com (Clear Channel Worldwide) Jazz 826,200
3 KING-FM www.king.org (Classic Radio, Inc.) Classical 535,500
4 WQXR-FM www.wqxr.com (New York Times) Classical 352,300
5 MEDIAmazing* www.mediaamazing.com (MEDIAmazing) Variety 343,400
6 Ministry of Sound www.ministryofsound.com (Ministry of Sound) Electronica 282,700
7 KNAC.com Pure Rock www.knac.com (KNAC.COM) Album Oriented Rock 258,800
8 KPLU – Jazz www.kplu.org (Pacific Lutheran University) Jazz 258,200
9 Radio Margaritaville www.radiomargaritaville.com (Radio Margaritaville, LLC) Adult Contemporary 248,900
10 CFNY-FM www.edge102.com (Corus Entertainment) New Rock 247,800
11 WEEI-AM www.weei.com (Entercom Communications) All Sports 205,600
12 ClubRadioMix www.clubradiomix.com (ClubRadioMix Cybermedia) Spanish Contemporary 204,900
13 Virgin Radio Classic Rock* www.virginradio.co.uk (SMG plc) Classic Rock 140,400
14 WHTZ-FM www.z100.com (Clear Channel Worldwide) Contemporary Hit Radio 140,000
15 Killer Oldies www.killeroldies.com (Royal Programs, Inc.) Oldies 132,700
16 CKRY-FM www.country105.com (Corus Entertainment) Country 131,300
17 WBUR-FM www.wbur.com (Public Interactive) News Talk Information 131,000
18 KCRW – Simulcast www.kcrw.org (KCRW/Santa Monica College) Variety 106,700
19 Tom Joyner Morning Show www.tomjoyner.com (ABC Radio Networks) Talk/Personality 104,200
20 KYSR-FM www.star987.com (Clear Channel Worldwide) Modern Adult Contemporary 94,600
21 KBCO-FM www.kbco.com (Clear Channel Worldwide) Album Adult Alternative 90,000
22 WNYC www.wnyc.org (WNYC Radio) Variety 86,400
23 Live365 – victorsdivas www.live365.com (Live365) Rhythm & Blues 78,300
24 The Groove www.catchthegroove.com (SMG plc) Urban Oldies 76,400
25 KFI-AM www.kfi640.com (Clear Channel Worldwide) News Talk Information 76,300

*Arbitron has been informed that this channel/station had reporting difficulties or only partial data was given during the reported period. Please contact the webcaster for further information.

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