“It makes professional radio relevant again,” said the Peanut Gallery’s David Anderson. He’s talking about podcasting, and he’s on a mellow mission to bring the medium to more than indie-rock playlists and sex advice. Since the Gallery started several years ago, he’s been mentioned in the New York Times, brought aboard fellow radio and bike nut Emily Goligoski, and recorded some fascinating stories. We sat down over dinner with both of them a little bit......