Bought the game on Steam, loving it! Thought I'd report a minor bug, and this forum was the only way I could find to contact the developer. Here's how to reproduce it in Windows 10:

1. Launch R-COIL from Steam 
2. Play (I was in "stress free" mode at the time)
3. ESC to pause (option to Quit shows)
4. Shift-Tab to open Steam overlay
5. Exit Steam overlay (Shift-Tab again should work)
6. Back in game, select No, don't quit.
7. Play resumes without sound.

If you don't pause first, the sound stays on after returning from Steam overlay. Not much of a bug, but every little bit helps, right? Thanks.

Hey thanks for picking up the game! I didn't know about that one. It's pretty minor really, so I'll probably only fix that if I crack the game open for some other reason, but it's certainly good to keep track of these things. Thanks for letting me know!