America Online's Radio@ Network Will Now Be Measured In Arbitron's Internet Broadcast Ratings.

Business Editors

NEW YORK--(BUSINESS WIRE)--June 10, 2003

Arbitron Inc. (NYSE: ARB) announced today that America Online(R)'s Radio@ Network has subscribed to, and will now be measured in, Arbitron's Internet Broadcast Ratings (powered by MeasureCast technology).

The AOL(R) Radio@ Network encompasses Radio@AOL, Radio@AOL for Broadband, Radio@Netscape and Spinner.com. For the week of May 19 - 25, the AOL Radio@ Network had 1,249,774 Cume Persons, the estimated number of unique listeners tuning in for more than five minutes. Also, the AOL Radio@ Network had 4,888,916 hours of Total Time Spent Tuning, the sum total of hours tuned by listeners to a given station or network. The AOL Radio@ Network will be included among Arbitron's Top Internet Broadcast Networks and Internet stations beginning with data for the week of May 26 - June 1 to be released on June 12.

The Radio@AOL Network offers more than 175 "best-of-breed" music, news, sports, entertainment, and seasonal stations, as well as celebrity stations from today's hottest stars and terrestrial streams from some of the most respected names in broadcasting.

"America Online is one of the world's foremost consumer brands. Its subscription to Arbitron's Internet Broadcast Ratings sends an important signal to advertisers that the AOL Radio@ Network is serious about their plans for Internet Broadcast advertising," said Steve Morris, president and chief executive officer, Arbitron Inc.

"A healthy and growing Internet Broadcast advertising market requires credible third party ratings and the AOL Radio@ Network is playing a crucial role in leading the industry forward," said Bill Rose, vice president and general manager, Arbitron Internet Broadcast Services.

"The number of online radio listeners is growing tremendously and we are thrilled that so many are tuning into the AOL Radio@ Network to enjoy a top quality listening experience and our broad selection of premier programming. As our audience expands, this new relationship with Arbitron helps us provide advertisers with the credible independent audience measurement they need," said Jim Van Huysse, general manager, the AOL Radio@Network.

Designed to transform the conventional radio experience, the AOL Radio@ Network offers convenient 24/7 access to a vast selection of original and third-party programming, contextual information, and integrated commerce. In addition to over 175 "best-of-breed stations," recently enhanced versions of Radio@AOL and Radio@AOL for Broadband provide listeners with new features that promote convenience and sharing, and offer dramatically improved sound quality.

About AOL(R) Entertainment

AOL Entertainment, a part of America Online, Inc., delivers a wide range of programming, products, and services across the entertainment spectrum, including games, movies, music, radio, sports, television, and ticketing. AOL Entertainment provides unique and compelling ways for the Internet's largest and most-engaged audience to experience exclusive premieres, get the latest news and reviews, access their favorite celebrities and even behind-the-scenes, and interact with fans from around the world. AOL Entertainment provides programming to AOL's flagship service, AOL(R) for Broadband service, and leading Web properties. America Online, Inc. is a wholly owned subsidiary of AOL Time Warner Inc. (NYSE: AOL). Based in Dulles, Virginia, America Online is the world's leader in interactive services, Web brands, Internet technologies, and e-commerce services.

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 Internet Broadcast 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, television 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 825 full-time employees; its executive offices are located in New York City.

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

All 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(TM) including press releases, regulatory filings and corporate materials by clicking on the "Digital Investor Kit" icon at www.kcsa.com

This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. The statements regarding Arbitron in this document that are not historical in nature, particularly those that utilize terminology such as "may," "will," "should," "likely," "expects," "anticipates," "estimates," "believes" or "plans," or comparable terminology, are forward-looking statements based on current expectations about future events, which Arbitron has derived from information currently available to it. These forward-looking statements involve known and unknown risks and uncertainties that may cause our results to be materially different from results implied in such forward-looking statements. These risks and uncertainties include whether we will be able to:

-- renew contracts with large customers as they expire;

-- successfully execute our business strategies, including timely

implementation of our Portable People Meter and our

MeasureCast Ratings services, as well as expansion of

international operations;

-- effectively manage the impact of further consolidation in the

radio industry;

-- keep up with rapidly changing technological needs of our

customer base, including creating new products and services

that meet these needs; and

-- successfully manage the impact on our business of any economic

downturn generally and in the advertising market in

particular, and the impact on costs of data collection due to

privacy concerns.

Additional important factors known to Arbitron that could cause forward-looking statements to turn out to be incorrect are identified and discussed from time to time in Arbitron's filings with the Securities and Exchange Commission, including in particular the risk factors discussed under the caption "ITEM 1. BUSINESS - Business Risks" in our Annual Report on Form 10-K.

The forward-looking statements contained in this document speak only as of the date of this release, and Arbitron undertakes no obligation to correct or update any forward-looking statements, whether as a result of new information, future events or otherwise.