Heat rice according to package directions. Meanwhile, in a large skillet, heat butter over medium-high heat. Add onion, celery and green pepper; cook and stir 4-6 minutes or until tender. Stir in kielbasa, salt, garlic powder, pepper and, if desired, cayenne; cook and stir 2-3 minutes or until kielbasa is browned., Add tomatoes, salsa and coffee granules; heat through. Stir in rice.