I fixed the sound, by taking a track out, so just a patch. The other one is a little deeper though. I'll letcha know.
http://chezzo.com/Hellfire/hellfiremod03.zip
(or you can add -- commenting out line 24 of /data/zones/mines/zone.lua by opening it in a text editor. So it should look like:
--ambient_music = "Freezer Burn.ogg",
Whichever works for you.)
Thanks for letting me know these things! If you run into anything else, please let me know. I know about a lot of the bugs, but all the ones you found were new to me.