CommentStreams:Db531db258c325e91db267b3b262e6e6
From The Lost Media Wiki
Hello there! I decided to take a look at your case and I found that the audio in question has been circulating around the internet since (at the latest) 2008, predating the well-known recreation/fake footage of the incident by many years and predating the forum post you linked to by almost a decade.
As seen here: https://youtu.be/9Y9SxwbFK0w
So either this was the real audio all this time or someone did a really good job faking it all the way back in the day.