# Execution failed for task app

**URL:** <https://discourse.processing.org/t/execution-failed-for-task-app/24563>\
**Category:** Processing for Android\
**Created:** [October 13, 2020, 9:22am UTC](https://discourse.processing.org/t/execution-failed-for-task-app/24563 "2020-10-13T09:22:16Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![noel](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/noel/32/213_2.png) [@noel](https://discourse.processing.org/u/noel)\
**Post date:** [November 2, 2020, 7:55pm UTC](https://discourse.processing.org/t/execution-failed-for-task-app/24563/3 "2020-11-02T19:55:13Z")

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Hi  
I’m still not convinced,  
@Electronix in [this link](https://discourse.processing.org/t/sound-library-no-longer-works/25110) is having problems as well.  
It may be a wrong structure setup of the library.  
I am trying to restructure it following the rules below given on t[his page](https://github.com/processing/processing-sound), and also adding the dex jar needed. If you only need to play a file you can do it in native code in the first link. The cassette library works also well.

### How to build

1. `git clone git@github.com:processing/processing-sound.git`
2. (optional: copy (or soft-link) `processing-core.zip` from your local [Processing for Android mode](https://github.com/processing/processing-android/releases/tag/latest) as well as your Android SDK’s `android.jar` , API level 26 or higher, into the `library/` folder. If you don’t do this, these will be downloaded from GitHub instead. Note that as of version 2.2 the sound library is compiled against Processing’s Android mode rather than the normal Processing `core.jar` in order to more smoothly support `AudioIn` on Android. Other dependencies, in particular Phil Burk’s [JSyn](http://www.softsynth.com/jsyn/) engine on which this library is based, are also all downloaded automatically by ant.)
3. `ant dist` (or, alternatively, run `build.xml` from within Eclipse)

The resulting `sound.zip` can be extracted into your Processing installation’s `libraries/` folder.

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_[View the full topic](https://discourse.processing.org/t/execution-failed-for-task-app/24563)._