Check the audio source toggles
In settings, confirm system audio is on if you expect PC audio, and microphone is on if you expect your voice. A replay only includes the sources that were enabled at the time of capture.
Check the correct target
System audio captures what your PC outputs through the selected device. If your sound is going to an output device Replayable is not listening to (for example sound routed to a different speakers/headphones device, or played exclusively through another app's pipeline), it won't be in the capture. Make sure the output device in settings matches the device your audio is actually playing through.
Volume and app-level output
- System volume — if your PC volume is muted or at zero, there is no audio signal to capture.
- App-level output — if only a single application is silent in the replay, check that application's own volume setting.
Restart capture after changing devices
If you changed audio devices (headphones, speakers) or drivers while Replayable was already running, the capture device may be stale. Restart Replayable after switching output devices, then capture again.