Known Bugs:
- The folder doesn't show up on Windows after first start. This is an Android bug (see here: code.google.com/p/android/issues/detail?id=38282)
  --> To solve this either create an 'Lernapp'-folder in "external" storage or restart your device after the app creates the folder for you


License Info:
Audio icon is licensed under CC BY 3.0 by Designmodo (https://www.iconfinder.com/icons/103167/audio_music_sound_speaker_volume_icon)