This is being posted on behalf of Torpid over on Steam: There needs to be a way to adjust volume from the keyboard instead of just in Settings.xml (I’d personally suggest F5 and F6 for the job).

the_shrike 6 May 2016:

I thought some of the F-keys already did that? Or was that just master volume?

megas 6 May 2016:

F7 and F8 control volume, according to keyboard mapping topic at the forum.

george moromisato 6 May 2016:

Yes, F7 and F8 control volume; this should become clearer once the keyboard mapping UI is released.

assumedpseudonym 6 May 2016:

 Reopening. The intent was to specifically control just the music volume, not the master volume for the whole game.

torpid 9 May 2016:

F7/F8 works great for sound effects but music is still quite loud. Only way I found to adjust with settings.xml file, thanks to AssumedPseudonym. Over speakers its not very noticeable but over headphones is quite loud.