You can set Sleep Timer if you want to pause music after a set time.
To set Sleep Timer, you should go to "My Account" tab from bottom navigation section > Click on "Sleep Timer" under "Music Listening Preferences" > Set time when you want music to stop > Click OK.
Music would automatically stop at the set time.
Once sleep timer is set, you would also see a notification in Notification Tray saying "Wynk Sleep Timer Active. Music will stop playing at the set time".
Note: Sleep Timer feature is only available in updated version (188.8.131.52) of Wynk Music application.