Complex sentence: Colin was furious when Guido reported Junior Roberts to the police for stealing some of his CD's and Guido was becoming annoyed with Colin's tendency to worry more for others than himself, namely Donna Ludlow, the unappreciative herion addict who Colin was trying to reform.
Split into simpler sentences: Colin was furious when Guido reported Junior Roberts to the police for stealing some of his CD's. Meanwhile, Guido was becoming annoyed with Colin's tendency to worry more for others than himself, namely Donna Ludlow, the unappreciative herion addict who Colin was trying to reform.