I am listening to it right now, it is mostly accoustic and sounds kind of like Dave Grohl of the Foo Fighters. Unless Robert Plant really lost his voice, I am pretty sure its a cover. Hopefully the dj says who it is. And of course these idiots don't mention it. They decided that they wanted to talk about fining a partner 5 bucks for saying something offencive. Shut up and play some music.

I think that it is Stone Temple Pilots, from the Zep tribute from some years back.

edit

yup, here it is.