Life is fleeting in these three works presented by guest host Michael Cerveris.   Andy Warhol complains about fifteen seconds of fame in excerpts from his diaries read by Denis O’Hare.  A novelist borrows someone else’s tragedy in “The Young Painters,” read by Heather Burns.  And a young boy and his grandmother in rural Ireland make a dramatic decision in Claire Keegan’s “The Burning Palms,” read by Patricia Kalember.