You can set Sleep Timer if you want to pause music after a set time.

To set Sleep Timer, you should switch to "My Account" tab > 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".