In a large saucepan, saute asparagus in butter until tender. Stir in flour until blended. Cook and stir for 2 minutes or until golden brown. Gradually add broth, cream and wine or additional broth. Bring to a boil. Reduce heat; simmer for 10-15 minutes.
In a blender; cover and process soup in batches until smooth. Return to the pan. Cube Brie and add to soup. Simmer, uncovered, for 5 minutes or until cheese is melted.