I'm very late to responding to this, but I wanted to say thank you so much for playing, and for the video!! I'm glad you enjoyed it, and it's so cool to see other people play through it. Also congrats on your first let's play video!!
It does actually look like the game audio may have glitched for your playthrough - do you mind if I ask what OS you were playing on? (although it's honestly a fun glitch, it makes the game sound way spookier, haha)
And one more question! I'm collecting playthrough/review videos to put on 1365's page on my website! I noticed this video is unlisted, but is it alright if I still link it on the page?