License fees payable for the public performance of sound recordings under section 106(6) shall not be taken into account in any administrative, judicial, or other governmental proceeding to set or adjust the royalties payable to copyright owners of musical works for the public performance of their works. It is the intent of Congress that royalties payable to copyright owners of musical works for the public performance of their works shall not be diminished in any respect as a result of the rights granted by section 106(6).