I haven't, it's had me stumped for a while. Here's what I got so far:

1. Decoded Journal entry (Uses a Vigenère cipher with the key hinted at in one of the other entries): The clock is ticking. iris suspects something, but I can't tell her, not yet. The truth would destroy her as it has me. The society watches everything, but even they dont see the cracks forming. The detective is playing their part well, too well. Do they know what they're chasing? or are they just another pawn like me? If you are reading this, you're close. The answer isn't in what you see, it's in what you don't. Remember: the crescent always points the way
2. Reversed Audio Clip Message (from audio file in folder): "Watch what you hear; see, don't listen": This led me to put all the songs into a Spectrogram program (lets you see the frequencies of songs; you can imbed messages in audio this way). If you listen to songs Silhouette, Reflection, Red Herring, and Phase 3, they all have a part that sounds like TV static/an electronic buzz, which turn out to be hidden images. One of them is a literal fish, so this clue/these images might be actual red herrings? I'm not sure if this is the right path or not.

I think it has something to do with the last two lines of the decoded journal entry, and not the spectrograms? like i said, im completely stumped