Can't stop song because it has to end before other lines run

I just want it to be able to stop halfway through playing the song but not sure how I need to do this? Does it need to be threaded?

public class playMusic {
   public static void main(String[] args){
      try{
          FileInputStream fileInputStream = new FileInputStream("*filePath*");
          Player player = new Player(fileInputStream);
          player.play();
          player.close();
      }catch(FileNotFoundException e){
          e.printStackTrace();
      }catch(JavaLayerException e){
          e.printStackTrace();
      }
   }
}

If you want the program to run two separate threads concurrently have a look at Concurrency/Threads. Example:

class PlayerThread extends Thread {
    private final Player player;

    PlayerThread(Player player) {
        this.player = player;
    }

    public void run() {
        try {
            player.play();
        } catch (JavaLayerException e) {
            e.printStackTrace();
        }
    }
}

class Main {
    public static void main(String[] args) throws InterruptedException {
        String filename = "*filename*";
        try (FileInputStream fileInputStream = new FileInputStream(filename)) {
            // load the file
            Player player = new Player(fileInputStream);
            // start playing music in separate thread
            new PlayerThread(player).start();

            // wait until you want to stop the music,
            // or do something else, maybe wait for user's decision
            Thread.sleep(10_000); // 10 seconds
            // close the player
            player.close();
        } catch (JavaLayerException | IOException e) {
            e.printStackTrace();
        }
    }

this way one thread runs plays the music while you can interact with the other and give commands. Bear in mind, concurrency is a large and complex topic, if you never used it you may run into some troubles. Study the tutorial:

https://docs.oracle.com/javase/tutorial/essential/concurrency/index.html https://docs.oracle.com/javase/tutorial/essential/concurrency/runthread.html