Mediaplayer stops when display is off

[Johannes]

Could the power saving settings be switching off the media player when you lock the screen?
There’s a discussion about various media players that you may also be interested in:

Recommendation for Audio Player

Hello Everybody, I had been using cyanogenmod for a longer time and I was always very happy with the pre-installed audio player. Something I miss now on the Fairphone 2. The audio player there was called previously Apollo and later Eleven. Unfortunately those apps are not available during the play store. Does anybody has a recommendation for a good audio player for browsing and using a larger set of audio files (hundreds of albums). Thanks!