@poorusher Don't get too worried about having to impress people. They're having you on because you're interesting and will say interesting things. Since you've already impressed them, relax and go with the flow, you'll have fun.
Retroactive best wishes on the radio interview. @ardgedee 's advice was perfect; my best shot would have been "picture your entire listening audience naked". Either way, I'm sure you killed.
Will post updates though, no fear.