AmplitudeJS allows you to stop playing a song after it has been finished. To stop a song after it has been finished playing you need to configure AmplitudeJS with the continue_next flag set to false on initialization. By default, AmplitudeJS will go to the next song in the list or playlist depending on state. To set the flag as false, initialize AmplitudeJS with the following parameter:

  Amplitude.init({
    "songs": [...],
    "continue_next": false
  });