I've been waiting for this since it was first mentioned in the chat. I listen to more audio dramas than most and people try gimmicks that more often than not just feel like exactly that, a gimmick.
The found footage idea of a black box recording not only works, but works in a way that would lose something if it were in any other medium.
It gives the early scenes of the charaters celebrating their find a sense of impending dread. You know from the very start that no one is getting out of this in one piece. It's The Hyacinth Disaster, not the Hyacinth Whoopsee.
Boter and Teague as noted else where do a better job than just show up as resident forumers, and Blue does a great job in the later episodes holding things together.
The mystery is handled nicely, I'm left wanting to know what's going on but I'm left with impression that Writhryn does know, and isn't about to give a TED talk about a mystery box.
I really hope this gets the attention it deserves.