An audio file that recorded the phone that the culprit of the transfer fraud actually took

There is an audio file placed on the site of the Metropolitan Police Station as "Actual Delivery Fraud Actually", but one of them is said to have actually recorded the phone that the criminal of the fraudulent fraud actually took. As valuable material, I heard it once, I wonder if there is any loss.

Download from below.
Transfer fraud technique (audio file): Metropolitan Police Department

MP3 format: 2MB

WMA format: 1.4 MB

The sound files of other cases on the same page are not recorded things, but it is quite interesting.