Stardock will be closed for the week starting on Monday, June 29th and we will be returning on Monday, July 6th. We will be monitoring support tickets and forums during this time but expect delays in responses during this time.
Looks like this was my error - I thought there was only a slider for SFX, but there's one for UI as well. Fixed! I dropped that down to about 30% (just enough to hear I've clicked) and it's not nearly as annoying and painful. Still, I'd recommend that Stardock looks into replacing that sound with a better sound effect seeing as how often you have to click buttons.
I'm not the only one who thinks this, it appears. I just bought the gold pack from Steam and have started on the tutorials. I've played quite a few 4x games, including GC2 and this is the first time where I've complained about a sound effect. I learned from the linked forum post that all of the SFX are bundled now, unlike in GC2 where they are all in separate .wav files. I'd really rather not disable SFX entirely, but there's no way (seemingly) to mod this to a different s