Interesting. The two DVD/CD sets I have (Dave Matthews Central Park and Matthews/Tim Reynolds @ Radio City) both allow a choice of 5.1 or PCM Stereo. The CD could have been mastered differently from the DVD but they seem the same except for the quality. The same person mastered both the Central Park DVD and CD but it looks like there might have been mixed by different people. Maybe someone has one of these sets and can also do a comparison.