Hi! I see you're having trouble getting TuneIn Radio to work on your Sonos S1 system. Let’s get this sorted for you.

Just so I understand perfectly, when you say it's "not working," do you mean the TuneIn service won’t load at all, or is it giving any error messages? Also, have you tried any fixes yet, like restarting your Sonos devices or the app?

From what I know, TuneIn support on the Sonos S1 app is a bit limited. In fact, TuneIn accounts are generally not supported on the S1 app anymore, which might be causing the issue you’re facing.

Here are some steps you can try to troubleshoot this:

1. Check Sonos S1 App Compatibility: Confirm that your Sonos S1 app and devices are fully updated, but note that TuneIn's full features may not be available on this older platform.

2. Remove and Re-add TuneIn Service:
- Open your Sonos S1 app on your device.
- Go to Settings > Services.
- Remove TuneIn from your list of music services.
- Restart the Sonos S1 app and your Sonos devices (unplug and replug the power).
- Go back and add TuneIn again as a new service.
This can refresh the connection and fix authorization issues.

3. Manual Stream URL Addition: If specific stations aren’t playing, you can try manually adding the streaming URL of the station through Sonos. For this, the station needs to provide streaming links in MP3, AAC, or WMA formats.

4. Router and Network Refresh: Restart your router to ensure there’s no network-related blockage.

5. Consider Upgrade to Sonos S2 System: Since TuneIn support is limited on Sonos S1, upgrading to Sonos S2 (if your equipment supports it) would provide full access to TuneIn and other services.

If you've already tried some of these or if you’re seeing specific error messages, let me know so I can guide you further.

Would you like me to walk you through removing and re-adding TuneIn on your Sonos S1 app? Also, could you share what happens when you try to play TuneIn stations now?