Apparently someone is already working on adding audio... seems like it would be difficult even if you are a good lip reader and knowledgable about the songs being played. The footage of the Stones is relatively useless but the rest kind of cool... nice to be reminded that music was actually played that day, the event itself and the violence is usually the focal point. Even without audio you can feel the amount of energy that Santana's band is generating just by looking at them performing.