Heat beef tri-tip according to package instructions. While tri-tip is heating, combine olive oil and garlic salt. Reserve 2 tablespoon for salsa. Preheat broiler. Place bread slices on baking sheet. Brush remaining olive oil mixture on bread. Broil 2-3 minutes until lightly browned. Prepare Tomato-Olive Salsa by combining all ingredients in a medium bowl. Set aside. Carve heated tri-tip cross grain into thin (1/4 inch thick) slices. Place sliced tri-tip on toasted bread. Top with Salsa. Sprinkle with cheese. Broil 4-5 minutes or until cheese melts.