Hi there! I see you're having trouble with no sound playing on some channels across the 1.FM app, webpage, and even third-party sites. I'd be glad to help you figure this out.

To start, could you please tell me:
- Is this issue happening with all channels or only specific ones?
- Are you using any external speakers or headphones?
- Have you checked the volume settings on your device and within the app/webpage?
- Are you noticing any error messages or other unusual behavior when playing those channels?

Knowing these details will help me guide you better. Meanwhile, here are some initial steps you can try to troubleshoot the sound issue:

1. Check Device Volume and Mute Settings: Make sure your Windows device volume is turned up and not muted. Also, check the app/webpage player volume controls.

2. Test With Different Channels: See if the sound issue occurs with all channels or just a few. Sometimes particular streams may have audio problems from the source.

3. Restart Your Device: Restarting can clear temporary glitches affecting sound playback.

4. Update or Reinstall the App: If you're using the app, ensure it’s updated to the latest version. Sometimes uninstalling and reinstalling helps.

5. Check Browser Sound Settings: Since you’re using a WebKit-based browser, verify that sound is allowed for the 1.FM website and third-party sites. Sometimes browser permissions mute sound by default.

6. Disable Audio Enhancements: On Windows, audio enhancements can sometimes cause issues. You can disable them via Sound settings > Playback devices > Properties > Enhancements tab.

If after these steps the issue persists or only specific channels have no sound, please let me know. We can then explore more advanced troubleshooting or check for server/stream outages on those channels.

Are you able to try these and share what happens?