Android Audio - multiple copies of sound files.

When I build application which contains multiple sound files (background music, etc.) on Android platform, every time I fresh start my application, the size of application's "Data" increases by the size of all audio files.

Whenever application starts, a copy of every sound file is created in /data/data/package_name/files on device's storage. e.g.: /data/data/org.qtproject.example.AndroidMp3Test/files/libAndroidMp3Test.so.EV9626.mp3. These files are never deleted, and after multiple launches application's data size can reach few hundred MB.

I've created a simple project which allows reproduction of this bug:
https://github.com/karamazi/QtAndroidAudioBug

To reproduce:

• Build project on Android platform.
• Run and wait few seconds.
• Kill application.
• Run it again.
• Size of "Data" should increase by the size of mp3 file.

To my knowledge, this behaviour occurs regardless of audio file type.