Is there any way to adjust RCT's volume level? It's so loud on my system I have to crank the overall volume down, which means making other stuff too quiet. I'd love to just dial down RCT's volume a couple of notches but can't find any way to do so...

There's always "Adjust system volume" in Windows Control Panel where you can do just that, for all running programs individually.

Is that a Vista/7 thing? I'm on XP and the only volume control I'm aware of Windows providing is global -- i.e. it affects all running programs, you can't set it for each individually.

it is an windows NT 6 feature under the game options there should be an setting for game music loudness.

I cant go to the windows system volume because the game starts in full-mode and the gog launcher kills the explorer.exe! So, no speaker symbole to adjust the volume and the physical buttons on my notebook or the buttons on my usb headset doesn't work, either....