It sure sounds like the real thing. Via Mashable:
Computer hackers associated with the hacktivist group Anonymous released a recording on YouTube Wednesday that they claim are audio files from a St. Louis County Police dispatch recorded during the Aug. 9 shooting of unarmed teenager Michael Brown in Ferguson, Missouri.
The tape appears to be from St. Louis County dispatch — but the officer who fired the shots works for Ferguson's police department. Discussion of the shooting begins at 11:26, when a dispatcher mentions hearing about the incident "on the news," and at minute 44, which contains audio from 1:35 p.m. - 2:05 p.m., the dispatcher says "we are switching over to the riot channel."
It's likely any chatter regarding the actual shooting will be found in the Ferguson Police Department's audio dispatches. Those have yet to be released — Ferguson's Police Chief Thomas Jackson says the 911 tapes were still being processed during a press conference on Wednesday, and apologized that it was taking so long.
Reached over email, St. Louis Police spokesperson Brian Schellman tells Mashable, "We are aware of this and are currently investigating it."
Asked if he has any indication if they were real, or any clue how they were obtained, Schellman responded, "That's what our investigators are looking into now. The answer to both of those questions."