Oreo Music Player App || Adding Sleep timer and Sort by folder feature

Components

Oreo Music Player is an audio player application designed for world music listeners and can enjoy the great variety of the greatness of a professional audio player.

Proposal

I would like to propose the following two features:

1. Sleep timer
   
   This feature is a way to stop audio when the user is asleep and can set the time when the audio will stop.
   
   
   
2. Sort by folder
   
   This is an additional feature that can sort audio by folder from filemanager.
   
   
   

Mockups/Examples

1. Sleep timer
   
   This is a screenshot after it is implemented.
   

2. Sort by folder
   
   This is a screenshot after it is implemented.
   

Benifits

1. Features can greatly help the user to turn off automatic music audio and according to the time set by the user himself.
   
   
   
2. Features can allow users to view the audio sequence based on the folder in filemanager.