Hi! I see you're experiencing sound issues on several Substack pages while the video plays fine on your Kindle device running Android 9. Just to clarify, is the issue happening only with audio embedded directly in Substack posts, like podcasts or voice recordings, or also with other sounds outside of Substack? Also, is the sound not playing on multiple Substack publications, or just specific ones?

Meanwhile, here are some steps tailored for your Kindle (Android 9) to try:

1. Check Device Volume and Media Audio:
- Make sure your device's media volume is turned up. Press the volume buttons and look for the media volume slider.
- Sometimes system volume and media volume are separate, so ensure media audio isn’t muted.

2. Browser or App:
- Are you using the Substack app or accessing Substack via a web browser on your Kindle? If using a browser, try a different one or the Substack app if available.
- If you use the app, try force closing it and reopening. You can do this via Settings > Apps > Substack > Force Stop.

3. Clear Cache:
- Clearing the Substack app cache may help. Go to Settings > Apps > Substack > Storage > Clear Cache.

4. Update App:
- Confirm your Substack app is up to date via the Amazon Appstore or Google Play Store.

5. Check Audio Settings in Substack Post:
- Some posts have separate audio tracks or toggles. Try tapping the play icon at the top right of the post to start audio as per official guidance6.

6. Try Playing Other Audio:
- Confirm other apps or videos on your Kindle play audio properly to isolate whether it’s Substack specific.

If these steps don’t resolve the sound problem, it might be linked to how audio is embedded in those specific Substack posts or a compatibility issue with your device’s Android 9 system.

Could you share if you tried any of the above already or if the problem appears in a particular context? That will help me guide you further!

sound on some embedded substack posts doesn't play.

Thanks for clarifying that the sound isn’t playing on some embedded audio posts in Substack on your Kindle. That helps narrow things down. Since video playback is fine, it suggests that basic media playback is working on your device, but there might be specific issues with how certain Substack audio embeds are handled.

Here are some suggestions tailored to your situation:

1. Try Refreshing the Post or Reload the Page/App:
Sometimes audio players don’t initialize correctly. Refreshing the page (if using browser) or restarting the Substack app can help.

2. Check for Specific Audio Controls in the Post:
Some Substack posts require you to tap a headphone icon or a specific audio player control to start playback of embedded audio1. Make sure you have tapped the proper play button and that the audio isn’t paused or muted at the player level.

3. Test Different Posts and Formats:
See if the problem happens with all embedded audio or only those hosted in certain ways (e.g., direct upload via Substack, SoundCloud embeds, or external links). Some formats may be incompatible or have issues on Android 9 devices.

4. Update Substack App and System Software:
Make sure your Kindle's Android OS is up to date as possible for your device model, and also the Substack app (via Amazon Appstore). Compatibility issues sometimes cause audio playback failures.

5. Try a Different Browser or Device:
If you’re accessing Substack from a browser instead of the app, try another browser to see if the issue is browser-specific. Alternatively, checking audio on another device can help isolate if it is device or account related.

6. Clear Cache for the Substack App or Browser:
Cached data can cause playback problems. Go to Settings > Apps > Substack > Storage > Clear Cache (for app). For browsers, clear browsing data or cache.

7. Check Network and Permissions:
Sometimes network restrictions or app permissions affect audio streaming. Ensure Substack app or browser has permission to use audio and Data/Wi-Fi is stable.

If after these steps audio still doesn’t play on embedded posts, it might be due to how those specific audio clips were embedded or a compatibility issue with your device’s Android version.

Would you be willing to share an example post link where the audio doesn’t play? That way, I can dig deeper and provide more specific guidance.

Are you satisfied with these steps so far? Feel free to let me know if you tried anything already or want more help!