Arrange cherries evenly on bottom of a greased 9 x 13 pan. Preheat oven to 350F. In a small saucepan, combine the cherry syrup, 1 package of cherry Jello and 1/4 cup Dr. Pepper; gently heat until Jello is dissolved. Add almond extract and cool slightly. In a large mixing bowl, combine yellow cake mix, 1 pack cherry Jello, oil, eggs and 3/4 cup Dr. Pepper. Beat on high for 3-4 minutes. Pour cooled Jello mixture over cherries in pan. Sprinkle evenly with the miniature marshmallows and then carefully and evenly spoon the batter mix over the marshmallows. Bake for 40-45 minutes. Cool on rack for 45 minutes. Chill 3-4 hours. This is a self icing cake!!!