I only caught part of this because I was flipping, but a reader caught the whole thing, sounds like I thought I caught:
CNN is using a split screen to show the Rumsfeld press conference, and also replay the most spectacular Baghdad footage. The sound on the replay footage was off. But when Rumsfeld began advising that the bombing was discriminate and controlled, they turned up the sound. Turned it up so much, in fact, it came close to drowning out Rumsfeld’s remarks.
The effect was to make Rumsfeld’s statements appear laughable.
Someone at CNN made a deliberate and very suspicious decision.