I haven't played factorio since 0.17, and it seems a lot has changed since. Looks good overall. But I've notice that game sounds are heavily reduced when I open my inventory.
I find this INCREDIBLY annoying. How do I turn it off?
Close the game, and open the config.ini,
Then you can edit the active-gui-environment-volume-modifier=0.400000.
Changing it to 1 should be what you're after