After searching for quite a while to find this immensely creepy ambience uploaded, having not found it, I decided to upload it myself. It's in the sounds folder rather than the music folder, and its name is "03_amb".
I'm fairly certain that it also plays in the Wine Cellar and various other areas, albeit less prominently.
I claim nothing in this video, seeing that my only contribution was looping the audio and adding an image (also not a creation of mine).