Simmer the orange juice over medium heat for about 10 minutes, or until reduced by about one-third. Add the margarine until sauce takes on a gravy-like consistency (coat the back of your spoon with the sauce and drag your finger through it - if the finger trail stays, the sauce is thick enough). Add the peaches and cook until soft, about five minutes, depending on ripeness. Ladle into serving bowls. Garnish with a pinch of cinnamon and nutmeg, and a few raspberries, and serve warm.