# Since Thunkable upgrade in last 2 months, sound doesn't play anymore on Web preview but plays on iOS **URL:** \ **Category:** Issues / Bugs\ **Created:** [September 11, 2024, 8:19am UTC](https://community.thunkable.com/t/since-thunkable-upgrade-in-last-2-months-sound-doesnt-play-anymore-on-web-preview-but-plays-on-ios/3193914 "2024-09-11T08:19:44Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![lisa.mendonsaxu](https://avatars.discourse-cdn.com/v4/letter/l/d6d6ee/32.png) [@lisa.mendonsaxu](https://community.thunkable.com/u/lisa.mendonsaxu)\ **Post date:** [September 11, 2024, 8:19am UTC](https://community.thunkable.com/t/since-thunkable-upgrade-in-last-2-months-sound-doesnt-play-anymore-on-web-preview-but-plays-on-ios/3193914/1 "2024-09-11T08:19:44Z")
I recently built an app that plays sound files (.m4a and .mp4). It worked fine back in June this year. After the summer holidays, I needed to make some edits and found there was a new version of Thunkable. In this version, the sound files do not seem to work on the web preview. When I use the live test on device (iPhone 15) it plays the sounds fine. There is no error on the web preview, I can see an icon in the browser showing me a file is being played, but I do not hear the sound. I have tried it on my personal laptop (Macbook) and work PC, both of which plays other sounds and do not have any sound issues. I know for sure that my Macbook played these files before because I developed the app on it. It only seems to be post this last upgrade. Any suggestions or anyone else encountered this? ---
**Author:** ![ioannis](https://sea1.discourse-cdn.com/flex015/user_avatar/community.thunkable.com/ioannis/32/146956_2.png) [@ioannis](https://community.thunkable.com/u/ioannis)\ **Post date:** [September 12, 2024, 2:04pm UTC](https://community.thunkable.com/t/since-thunkable-upgrade-in-last-2-months-sound-doesnt-play-anymore-on-web-preview-but-plays-on-ios/3193914/2 "2024-09-12T14:04:16Z")
Hi lisa.mendonsaxu, welcome to Thunkable! 🎉 Be sure to check out [How to ask Great Questions v2.0](https://community.thunkable.com/t/how-to-ask-great-questions-v2-0/2689983/1), the [Community Guidelines](https://community.thunkable.com/t/community-guidelines/78/8), and our [Getting Started Guide](https://docs.thunkable.com/getting-started/get-started) to make the best of your Thunkable Community experience! Which browser do you use? Have you tried to use a different one? ---
**Author:** ![lisa.mendonsaxu](https://avatars.discourse-cdn.com/v4/letter/l/d6d6ee/32.png) [@lisa.mendonsaxu](https://community.thunkable.com/u/lisa.mendonsaxu)\ **Post date:** [September 13, 2024, 8:26am UTC](https://community.thunkable.com/t/since-thunkable-upgrade-in-last-2-months-sound-doesnt-play-anymore-on-web-preview-but-plays-on-ios/3193914/3 "2024-09-13T08:26:09Z")
I tried Safari and Firefox on my macbook. Safari shows the graphics but not sound. Firefox doesn’t even load the web preview! However, inspired by your tip, I tried it on Chrome on a Windows PC and it worked perfectly.