In all likelihood, the RIAA wants 0.4 cents per listener per song. So, say you stream twelve songs per hour. At that rate, you'd owe labels 4.8 cents per listener per hour. This is a little confusing. If so, this has nothing to do with the RIAA or the fees they're demanding from webcasters for performance copyrights.
Traditional broadcasters pay nothing for performance copyrights.
The JPC recommends this as a precautionary measure. Failure to follow this precaution is not a concession that talent payments are due as a result of passive streaming. See the entire letter at Radio Ink here . Similarly, suppose your local ball clubs were playing your station over their PA systems before every game. This seems like a very aggressive stance for them to take.