WARNING: SPOILER ALERT
The sound file played backwards and slowed down says "Communication is the joint establishment of meaning"
Google this, and the third result goes to a Gallery.
The Gallery has an Alphabet board that looks like the second hint would line up with:
Taking the letters in order, you get:
ATZKEPIUVC
This is the password for the pastebin, which contains a URL to this:
https://postimg.org/image/c9d6jraq9/
with the clue "Find My Creator".
Reverse image search on Google leads you to a picture taken by Kevin Carter while covering the famine in Sudan.
(interesting read: http://all-that-is-interesting.com/kevin-carter)
RE: The Steemit Crypto Challenge #16 - CC2k17.6 - 100 STEEM Prize!