I just got the Blu-Ray recently, and I love how they included both the "feature film" and "studio" 5.1 mixes. The Stereo PCM track sounds like a downmix of the "studio" mix, and it's phenomenal. The best I've ever heard this album or film sound. The other 5.1 mix is more "live" sounding - more room sound and not as much detail. Something akin to being in the middle of the theater vs. being in the front row. All three audio tracks are dynamic and excellent sounding, just different flavors. What a great concert film.