COLUMBIA, Md., Aug. 5, 2013 /PRNewswire/ -- Arbitron Inc. (NYSE: ARB) today announced that Entercom Communications Corp., one of the five largest radio groups in the United States, has signed multi-year, multi-market renewals for Arbitron's Portable People Meter ™ (PPM ®) and Diary radio ratings services. "Entercom is an industry leader and shares Arbitron's commitment to helping radio demonstrate its value to advertisers as a vibrant and growing medium," said Sean Creamer, president and chief executive officer, Arbitron Inc. "Our two companies have enjoyed a long and collaborative relationship and we will continue our joint efforts to demonstrate the strength of Radio within the expanding media landscape." "We look forward to expanding our partnership with Arbitron as we continue to identify opportunities that grow our radio platform and make us more attractive to our listeners and our customers," said David Field, President and CEO of Entercom Communications. "We plan to continue to collaborate with Arbitron to demonstrate the incredible value of radio, to ensure broadcasters get full credit for their audiences and to enhance the high return to marketers on their advertising investment." About Entercom CommunicationsEntercom Communications Corp. (NYSE: ETM), led by President and CEO David Field, is one of the largest radio broadcasting companies in the United States, with a nationwide portfolio of over 100 stations in 23 markets, including San Francisco, Boston, Seattle, Denver, Portland, Sacramento and Kansas City. Known for developing unique and highly successful locally programmed stations, Entercom is home to some of radio's most distinguished brands and compelling personalities. The company is also the radio broadcast partner of the Boston Red Sox, Boston Celtics, Buffalo Bills, Buffalo Sabres, Kansas City Royals, Memphis Grizzlies, New Orleans Saints, New Orleans Hornets, Oakland Athletics, Oakland Raiders and San Jose Sharks.