# Audio playback issues

> No sound, missing lines, or Listen mode greyed out? Here’s how to fix playback.

- URL: https://www.offbook.com/help-center/troubleshooting/audio-playback-issues

Category: Troubleshooting, in the [Offbook Help Center](https://www.offbook.com/help-center).

## No sound at all

1. Check your system volume and output device. Bluetooth headphones love to steal the output silently.
2. Make sure the browser tab isn't muted (right-click the tab → Unmute).
3. Interact with the page (click anywhere) before starting; browsers block audio that starts before any user interaction.
4. Re-run the speaker test from scene setup if you're unsure whether it's Offbook or your device.

## Listen mode is greyed out

Listen mode needs the scene's audio to be generated first. If it's disabled with a note about audio generation, generate audio for the scene (or wait for generation to finish), then try again.

## A specific line won't play or sounds wrong

- Open **Edit Scene**, select the line, and choose **Regenerate Audio**.
- If the line has odd silence at the start or end, use **Trim Audio** instead of regenerating.
- If generation fails, check your monthly [audio allowance](https://www.offbook.com/help-center/account-billing/audio-credits-explained), since generation stops when it's used up.

## Voice previews fail

If tapping a voice preview shows "Failed to play voice preview", it's usually a momentary network issue. Try again, and check the [connection guide](https://www.offbook.com/help-center/troubleshooting/connection-issues) if it persists.