Now that the audio recording of the shots fired has been verified as to time and date, a montage of witness statements and the recording has been put together to demonstrate how closely all the witness accounts align with the actual shots fired.
They won't tell us whether or not Mike Brown had his hands up, and they won't tell us whether or not Darren Wilson struggled with Brown in the car. But they do tell us that separate witnesses who did not know each other told essentially the same story, and that story aligns with the sound associated with shots fired from the officer's gun.
[h/t Shaun King]