soundboard
Play sounds straight into your mic. Anyone in your game or voice chat hears them, along with your voice.
Setup
Install VB-Cable and restart your PC.
A free virtual mic that carries your voice and the sounds into the game.
Run the soundboard installer.
The app isn't code-signed yet. On Windows, if you see “Windows protected your PC”, click More info, then Run anyway. On Mac, open it once, then go to System Settings, Privacy & Security, and click Open Anyway.
In your game or voice chat app, set your microphone to
CABLE Output (VB-Audio Virtual Cable).The app's setup tab walks you through the rest.