Description of problem:
No music, which is rather annoying for a media player ;-) The complete error message is:

amarok(6219)/phonon (KDE plugin): Can not create backend object from factory for  "GStreamer" ,  "phonon_gstreamer" :
 "Could not find plugin 'GStreamer' for application 'amarok'" 
WARNING: bool Phonon::FactoryPrivate::createBackend() phonon backend plugin could not be loaded

Settings -> Configure Amarok -> Playback -> Configure Phonon -> Device Preference is empty. The Front Left and Front Right buttons (Audio Hardware Setup tab) are working correct.

No problems with sound in other applications.

Version-Release number of selected component (if applicable):
amarok-2.8.90-5.fc24.x86_64

phonon-backend-gstreamer-4.8.2-6.fc24.x86_64
phonon-4.8.3-9.fc24.x86_64
phonon-qt5-backend-gstreamer-4.8.2-6.fc24.x86_64
phonon-qt5-4.8.3-9.fc24.x86_64

gstreamer1-plugins-base-1.7.91-1.fc24.x86_64
qt5-gstreamer-1.2.0-8.fc24.x86_64
gstreamer1-plugins-good-1.7.91-1.fc24.x86_64
libnice-gstreamer1-0.1.13-3.fc24.x86_64
phonon-backend-gstreamer-4.8.2-6.fc24.x86_64
qt-gstreamer-1.2.0-8.fc24.x86_64
gstreamer1-1.7.91-1.fc24.x86_64
gstreamer1-plugins-bad-free-1.7.91-1.fc24.x86_64

How reproducible:
Always

Steps to Reproduce:
1. Start Amarok
2. Play a - local - track
3.

Actual results:
No sound

Expected results:
Track is audible

Additional info: