I am using the phone to listen to lectures to prepare for exams. The default Music app is not good enough for playlists. It does not seem to offer a way to select a directory of lectures and add it to the playlist. And then maybe another playlist that holds all the lectures that I have listened to for the first time( and maybe for the second time too
).
So I moved to moba player. But then the default music player continues to be the music app. I disabled it. Then I specifically put moba player in app settings and yet I cannot turn it on through my headphone button.

So I moved to moba player. But then the default music player continues to be the music app. I disabled it. Then I specifically put moba player in app settings and yet I cannot turn it on through my headphone button.