Unfortunately, App has stopped WHY ?

My MainActivity.java, any ideas ?

package com.milestimko.banan;

import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBar;
import android.support.v4.app.Fragment;
import android.media.MediaPlayer;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.os.Build;

public class MainActivity     extends ActionBarActivity {

    Button but1, but2, but3, but4, but5, but6, but7, but8, but9, but10, but11, but12, but13, but14, but15, but16;
	
	
	
	
	
	@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        if (savedInstanceState == null) {
            getSupportFragmentManager().beginTransaction()
                    .add(R.id.container, new PlaceholderFragment())
                    .commit();
        }
    
        final MediaPlayer sound1 = MediaPlayer.create(MainActivity.this, R.raw.banan);
        final MediaPlayer sound2 = MediaPlayer.create(MainActivity.this, R.raw.daj_mi_jesc);
        ...
        final MediaPlayer sound16 = MediaPlayer.create(MainActivity.this, R.raw.zlobr2);
        
        
        but1 = (Button) findViewById(R.id.button1);
        but2 = (Button) findViewById(R.id.button2);
        ...
        but16 = (Button) findViewById(R.id.button16);

        
        but1.setOnClickListener(new View.OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				sound1.start();
			}
		});
        but2.setOnClickListener(new View.OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				sound2.start();
			}
		});        
	 
              ...
        
        but15.setOnClickListener(new View.OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				sound15.start();
			}
		});	
        but16.setOnClickListener(new View.OnClickListener() {
			
			@Override
			public void onClick(View v) {
				// TODO Auto-generated method stub
				sound16.start();
			}
		});	
        					
	}

...

What error gives Eclipse? Nullpointer exception? You also need to release the mediaPlayer, otherwise you get to many instances

eclipse says: “Unhandled event loop exception” and "No command output when running: 'am start -n com.milestimko.banan/com.milestimko.banan.MainActivity -a android.intent.action.MAIN -c "
and how do i release the mediaPlayer in this particular case ?

check it out on Stackoverflow, everything is there:

java - How to properly release Android MediaPlayer - Stack Overflow

it could be an Eclipse problem:
android - Unhandled event loop exception in plugin org.eclipse.ui - Stack Overflow