[cavespreview] silent mini-glaciers

Can confirm. This also happens in the Trade Inn Beta branch.

Also happens to me.

Me 2. Mining large or small glaciers = no sound.

I also have silent glaciers. I thought I lost all game sound but then a crow decided to caw and prove me wrong. Still the mining process is eerily silent. 

I wonder if it's related to FMOD Error that pops up in the server log.