If there’s no sound on your live stream, try applying these steps: 1. Make sure your OS volume mixer isn’t muting the browser or platform being used for the live stream. 2. Go to the broadcaster’s settings and choose the correct devices there. Alternatively, add a proper device as a source. 3. Check under the broadcaster’s additional audio settings. Enable a proper audio device for the channel being sent to stream. 4. Try streaming to another service.