I have a new Nokia 3.1. After putting in and formatting an SD card, I copied a tonne of music to it (in
/Music in the root folder). These are m4a and mp3 files. It seems only default apps can see and play music - although not very effectively since I don't want to pay or use the internet to listen to my own collection.
Every music player app I get (Musicolet, Pulsar, etc.) will not find the music automatically; will not find it when forced to rescan; will not play it when it is sent to the app via Files.
'Files' and 'Google Play' will see and play the files. Musicolet (the only one out of 10 different apps) will scan the files, pick up that they're all there - and then not update the music library or show anything.
I've tried clearing temporary storage, uninstalling/reinstalling music player apps, restarting the phone - the same story.
What is going on?