As Jason Schultz says, Rush Limbaugh may actually be "a copyfighter at heart" (Rush Limbaugh: Copyfighter?). Turns out RL is not terribly happy with the music licensing situation for podcasts (Rush Limbaugh Podcast All the Rage):

They were righteously indignant and offended and they said, "No, it has nothing to do with that. The cost is prohibitive." I mean there's no system set up for this kind of thing yet. We're away ahead of the curve to do this legally. I can't explain the people that are doing it in a way that we have been told is illegal, and I can't explain why they're doing it, and the fact that they are doing it does not give us the confidence that we could do it ourselves. We have a big legal team that's looked into this. But I just want to tell you we're continually working on it, which at this point simply means monitoring developments in this whole copyright and piracy law. I know the Millennium Copyright Act is what this is all about, and until that's changed, none of this is going to change. In fact I just saw a story in my RSS reader today that Sony is coming out with a new system to copy-protect their CDs. There's software on their CDs that will allow a maximum of three dubs, three copies, and then it shuts down. So if somebody goes and buy a CD, they can copy it three times, but that's it and it's not on all their CDs. It's a new technology that they are embedding in the CDs, and of course the DVD industry has gotten even much tougher than the music industry has, but it's a huge deal and we have looked at it in every which way and that's what we have been told by the legal eagles. Whatever anybody else is doing out there is of no consequence to us. Based on what we have learned anybody else doing this is doing so at risk, and that's as much as I will say about it.