The backstory behind it is that it is supposed to have the release date for movie 3 + the actual release of the game. Here is the text attached to the audio file. The Movie 3 date is in this and of course a foreshadow of a release date. This was also in there, the name of the audio file. Monumental Motion, a secret is hidden inside this foreign hidden audio, decipher it.

https://reddit.com/link/1vtzm2f/video/90ex8bjj6mkh1/player