The present invention is directed toward providing a headliner for a motor vehicle comprising an interior layer adapted to present a surface that is exposed to the interior of the vehicle, a flexible film assembly that is supported by the interior layer opposite to the interior of the vehicle; and a fill layer adapted to be flowed over the flexible film and subsequently hardened to form a main supporting body of the headliner. The flexible film assembly has a first film layer adapted to establish a generally flat base surface that is mounted to the interior layer and a second film layer supported on the first film layer having a plurality of voids formed by portions of the second film layer that are spaced from said first film layer at predetermined intervals so as to establish an undulating upper surface of the film assembly. The plurality of voids are adapted to act as a plurality of resonating cavities to attenuate acoustical frequencies within the vehicle.