Simply put, I can't hear it. Now having searched the forum I know the attitude is that's its my own fault for being deaf / hard-of-hearing but seriously, it's so faint compared to everything else that I have to crank volume up to obnoxious levels to be able to hear that faint beeping. Oxygen alarm goes on top of the character which is darn easy to notice, hunger flashes @ the corner of the screen which isn't that noticeable especially since the bar is quite small. When happily mining or crafting I suddenly buy the farm since I overlooked the flashing, pop goes 30% of pixels. I guess I could try finding the warning beep but it's probably mixed at low volume to start.