I found the file that is causing that problem. I have modified it, so it should work correctly now. I'll upload patch 0.3.5, which has this problem fixed in a moment. :)
i am on version 0.3.6 i am having the same issue. I did however download the game trough the itch.io application . the file is called audio/bmg/dungeon03%E5%A1%94(tower).ogg. This is however not the only file that i have seen not work. the first one was during the first dinner with the central watch the second time was in the red hornets HQ.