Don't expect the George Zimmerman trial to hinge on a 911 recording that includes screams for help along with the gunshot that killed Trayvon Martin. Two separate analyses of the call's audio have been completed, and they disagree with each other, reports the Orlando Sentinel. One analyst thinks it's Trayvon shouting for help, but the other team says it's impossible to say definitively. Some of the screams are a near match for Trayvon, they write, while at least two sound like Zimmerman. A judge has yet to determine whether any of the experts' testimony will be admissible in court. You can hear for yourself at the Sentinel, which has a clip.