Were you trying to upload your own music from your Android storage and could not find it?
Seems like your device's "sound picker" settings have changed.
Here’s how you can easily resolve it:
- In <Android Settings> select <Apps>, then in the <Play Music> app select <Permissions> and turn the Storage permission "On".
- Or, you may remove 'Play Music' as your default app to select music:
Under <App Info> in the "Google Play Music" application, tap on "Open by default" --> Tap on the "Clear defaults" button on the next screen.
Next time you upload your own music, the selection dialog will appear instead.