# MP3 Audio not playing in AAB build (works fine in Web Preview)

**URL:** <https://community.thunkable.com/t/mp3-audio-not-playing-in-aab-build-works-fine-in-web-preview/4107591>\
**Category:** Questions about Thunkable X\
**Tags:** beginner, help\
**Created:** [September 8, 2025, 2:04am UTC](https://community.thunkable.com/t/mp3-audio-not-playing-in-aab-build-works-fine-in-web-preview/4107591 "2025-09-08T02:04:09Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![juancarlo.acostariva](https://avatars.discourse-cdn.com/v4/letter/j/df705f/32.png) [@juancarlo.acostariva](https://community.thunkable.com/u/juancarlo.acostariva)\
**Post date:** [September 8, 2025, 2:04am UTC](https://community.thunkable.com/t/mp3-audio-not-playing-in-aab-build-works-fine-in-web-preview/4107591/1 "2025-09-08T02:04:10Z")

</div>

Hello Thunkable Community,

I have a problem with audio in my project. All my MP3 files work perfectly in **Web Preview** , but when I export the **Android App Bundle (AAB)** and upload it to Google Play for an update, the audio doesn’t play at all. The audio files don’t work on the “LIVE TEST ON DEVICE”, too.

- Platform: Android (AAB build for Google Play)

- Audio format: MP3

- Behavior: Works in Web Preview, silent in installed app

- What should I do? What’s the problem?

Has anyone faced the same issue?

Thanks in advance for any guidance 🙏

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex015/uploads/thunkable/original/3X/0/f/0f59f292712368bce16ff80133ae10de8a6f27e8.png) [@system](https://community.thunkable.com/u/system)\
**Post date:** [December 7, 2025, 2:04am UTC](https://community.thunkable.com/t/mp3-audio-not-playing-in-aab-build-works-fine-in-web-preview/4107591/2 "2025-12-07T02:04:23Z")

</div>

This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.