Unable to play music in Do Not Disturb mode

[Dave Hale1]

On my HTC One M9 I used to be able to put DND mode on but still play audio books or music, but now I can't. When I go into the audio settings of DND I can slide the music and media up high, and click "done" but when I go back in, the slide is at zero again. Is there a fix please

 

[emiliojusima]

Try an external app for do not disturb.

 

[Jamie Houston]

You can change the exceptions mode to custom and it plays audio. It seems to work the same otherwise.