Preheat oven to 350F.
In the bottom of the baking dish, stir together the rice and seasoning packet.
Place the chicken breasts on top and season with garlic salt. Top with mushrooms.
In a small bowl, stir together the melted butter, soup, sour cream and wine. Pour over chicken and rice. Sprinkle the top with paprika.
Place in preheated oven and bake for 1 hour, or until rice is tender.