Record producer Mark Ronson has snubbed his celebrity fans - by vowing never to play live for a famous audience. The star - who worked extensively with Amy Winehouse on her sophomore album Back To Black - insists he's tired of being lauded by A-list stars. He says, "People come up to me and they're like, 'Natalie Portman's at the door', and I'm like, 'She can't come in, I don't play for celebrities anymore'."