Mobile entertainment and content service Thumbplay announced a new relationship with Clear Channel Radio to roll out customized mobile content stores across more than 650 of its local music stations’ Websites.  Thumbplay’s mobile content stores already have launched on more than 100 stations’ Websites across the country, including those in large metropolitan markets such as Los Angeles, Chicago, Philadelphia, San Francisco, Dallas, Boston, Washington D.C., Atlanta and Houston.

As part of the deal, each radio station site will host a customized store featuring format-appropriate mobile content. Thumbplay also announced a customizable widget allowing DJs at each station to choose their favorite ringtones and update those selections themselves online.

“Many of our listeners first discover their favorite songs on radio,” said Larry Linietsky, vice president of Business and Product Development for Clear Channel Online Music and Radio, in a statement. “We can now connect the dots by delivering a broad selection of mobile content, including exclusive station-created ringtones and graphics, right to our listeners via our stations’ Web sites.”