In a small saucepan, cook spaghetti sauce over medium-low heat for 3-4 minutes or until heated through. , Meanwhile, spread butter over one side of each tortilla. Sprinkle unbuttered sides of two tortillas with mozzarella cheese; top with salami and pepperoni. Sprinkle with Parmesan cheese and oregano. Top with remaining tortillas, buttered side up. , Cook on a griddle over medium heat for 2-3 minutes on each side or until cheese is melted. Cut into wedges; serve with warmed spaghetti sauce.,