(I don't know if you were referring to payola or the fact that the RIAA gives gigantic breaks on those payments to large radio stations, though.)

A little from column A, little from column B.

(Unless it happens to be one of the three that get played four thousand times a day; waiting a few minutes isn't difficult.)

I wonder if in those rules stations are required to talk over the beginning and end of songs so that if someone records a song, it's got the stupid DJ chatter. I'm only half serious here, I mean, I can't imagine such a rule would exist, but it certainly would be another reason to go buy the CD.