If you are facing an issue with no sounds on your canvas plus built, please try following fixes.
Try to install following plugin to your cocoon project.
<plugin name="cordova-plugin-nativeaudio" spec="*"/>
Just add the line above to your config.xml at Cocoon -> [Your Project] -> config.xml.
It’s important to use the acurate audio file formats for each platform, iOS and Android. If you add a “.wav” audio file to Construct 2, it mostly can be converted to “.ogg” and “.m4a” automatically. If there is an issue, please check your audio files.
- iOS, Windows Phone => .m4a
- Android, any other platform => .ogg
Also enable both checkboxes at “Export audio files for” on the Construct 2 export options window.