Soderbergh and supervising sound editor/rerecording mixer Larry Blake supervised and approved the DTS-HD Master Audio 5.1. However, don't let the designation fool you. The dialogue and effects were originally recorded in mono and are delivered through the center speaker. Though limited in space, the audio still offers a worthwhile listen, which is clean and augmented by the subwoofer punctuating the bottom end for effects such as gunfire. Composer Cliff Martinez' score is heard in the surrounds.
Traffic (The Criterion Collection) is a great film and a very good upgrade. Though the audio and video may not be typical for high definition, they are as the director intended and look are good as they can be and the A/V appears free of transfer defects. The plethora of special features are ported over from the DVD and now available in 1080i.