George Zimmerman is charged with the murder of 17-year-old Trayvon Martin. Lawyers for both sides are meeting with a judge today to determine whether a  9-1-1 recording including screams for help should be presented to the jury. However, it’s unclear who is screaming. Audio experts are divided, some saying it’s Martin, others saying it’s Zimmerman.

Click here to listen to the 9-1-1 call and exclusive audio obtained by ABC News of Trayvon Martin’s voice, recovered from his cell phone.