What is wrong with people
This is textbook Streisand effect. I didn't even know or care about this, but now I can have a copy the material as well.... in addition to the thousands of other curious internetters. If something is on the net that you don't want to be there, just keep schtum and only a minority will care.
As for the request, I can't see much in the way of justification. Assuming the audio is genuine, it surely can't be disputed as fact. So the only reason you would want for people not to hear it is if you had a bunch of other people about to claim events happened differently in an arse-covering exercise.