# Playback of App m4a files

**URL:** <https://forum.juce.com/t/playback-of-app-m4a-files/39429>\
**Category:** Audio Plugins\
**Created:** [May 14, 2020, 11:25am UTC](https://forum.juce.com/t/playback-of-app-m4a-files/39429 "2020-05-14T11:25:43Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![YairAtRoli](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/yairatroli/32/8591_2.png) [@YairAtRoli](https://forum.juce.com/u/YairAtRoli)\
**Post date:** [May 14, 2020, 11:25am UTC](https://forum.juce.com/t/playback-of-app-m4a-files/39429/1 "2020-05-14T11:25:43Z")

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I’ve just started to work with JUCE.  
Running the projucer audio demos, I’ve noticed that I can load and play mp3 files, but not the Apple m4a files.  
Does JUCE support these audio files? If not, how can I enable decoding of these files?

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**Author:** ![dave96](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/dave96/32/8487_2.png) [@dave96](https://forum.juce.com/u/dave96)\
**Post date:** [May 14, 2020, 11:57am UTC](https://forum.juce.com/t/playback-of-app-m4a-files/39429/2 "2020-05-14T11:57:45Z")

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Are you on a Mac? If so, juce should be able to read unprotected m4a files using its CoreAudioFormat.

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**Author:** ![YairAtRoli](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/yairatroli/32/8591_2.png) [@YairAtRoli](https://forum.juce.com/u/YairAtRoli)\
**Post date:** [May 14, 2020, 12:16pm UTC](https://forum.juce.com/t/playback-of-app-m4a-files/39429/3 "2020-05-14T12:16:35Z")

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Yes, I’m on the Mac. I was trying the DemoProjucer application, and I could not read m4a files.  
Is there another demo I can use to see how I read m4a files on the mac?

Also, I’m planing to build a multi-platform application (Mac, iOS, Android). I assume that reading m4a files of Mac and iOS will work (per you reply). How about doing it on Android ?

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**Author:** ![electropict](https://sea2.discourse-cdn.com/flex026/user_avatar/forum.juce.com/electropict/32/4463_2.png) [@electropict](https://forum.juce.com/u/electropict)\
**Post date:** [July 28, 2021, 1:37am UTC](https://forum.juce.com/t/playback-of-app-m4a-files/39429/4 "2021-07-28T01:37:54Z")

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I’m not able to get m4a files loaded on Android using the standard fileChooser/createInputStream approach. Wav and mp3 files load fine.