A group of radio broadcasters has asked for changes to federal rules about how stations disclose paid programming, raising fresh concerns about one of the music industry’s most enduring scandals — payola.

In a petition to the Federal Communications Commission, nine broadcasters — including major ones like iHeartMedia, Cox, Emmis Communications and Entercom — requested a waiver to longstanding requirements that stations say on the air when a sponsor or promoter has paid for a piece of programming, like a song.

Instead, the radio companies want to move these disclosures online, arguing that they would be more thorough and convenient there. The change is in the public interest, the broadcasters said, “because it would result in listeners’ having access to more information in a more user-friendly and satisfying way.”

The broadcasters’ petition was dated Nov. 26 but not revealed until Friday, when the F.C.C. announced that it would accept public comments on the proposal through April 13. A spokesman for the agency said its backlog of work prevented the petition from being processed sooner.