Valid criticism! Being a solo dev for this and having to add all the audio stuff in the final hours, I'll admit I don't have much experience adding sound effects and music (I usually don't get that far with projects, haha). I didn't end up finding a track that wasn't copyrighted, and that was also not too distracting from the atmosphere I was going for, so I went with my gut and left it silent.
I'm still glad you enjoyed the game though! :)