Until someone goes back & re-adjusts the settings in the source, you can go through & crank up the volumes on the ay-3s 8910a's. (Or you can do it yourself in the source & recompile it...but .184 should be out soonish & maybe someone will stick that in before releasing it later).
Just in case someone doesn't know, hit "`"(tilde) & down arrow until you see the volume controls for the ay's.
The first 3 are the channels for the music...CH0, CH1, & CH2
ay2=bullet hits & lamp sfx
ay3=elevator & step sfx
You still might want to open a report on those in case a dev doesn't see this, so that it will be fixed...
Hope that helps. Enjoy!
Pessimist: Oh, this can't get any worse!
Optimist: Yes, it can!