GlueBall,
Info I had here (via press only) from the Gol Boeing 737-800's CVR was:
1- The crew had no problems with radio communications.
2- No voice sounds were recorded after impact. No screams, indicating the crew and passengers went unconscious as a result of the high rate of roll.
3- CVR stopped recording at 6.000 ft.
Sorry if I can't get you more info. I heard that the families of the victims are "demanding" access to the recordings, just like the families of the TAM accident had.