In true “Odyssey” fashion, we’re adding a few more stops to this Homeric kick. Today, it’s the Coen Brothers’ 2000 adaptation of “The Odyssey” — a banjo-picking romp full of scoundrels, sirens, and Depression-era commentary on the battle between newness and nostalgia. My sister Grace is here to discuss why “O Brother, Where Art Thou?” was one of our childhood touchstones, flex some translation knowledge, and play a disturbing album sales game.