Rodar aplicação externa. [RESOLVIDO]

String caminhoCompletoWinamp = "C:\\Arquivos de programas\\...\\winamp.exe";

btn.addActionListener(new ActionListener(){
     public void actionPerformed(ActionEvent e){
           try{ 
               Runtime.getRuntime().exec(caminhoCompletoWinamp); 
           } catch(Exception e){
               System.out.println(e.getMessage());
           }
     }
});

import java.io.File;

import org.jdesktop.jdic.desktop.Desktop;

import org.jdesktop.jdic.desktop.DesktopException;

public class TestOpen {

public static void main(String[] args) {

try {

Desktop.open(new File(“C:\Arquivos de Programas\Winamp\winamp.exe”));

} catch (DesktopException e) {

e.printStackTrace();

}

}

}

import java.awt.Desktop;
import java.io.File; 

public class TestOpen { 
    public static void main(String[] args) { 
        try { 
            Desktop.getDesktop().open(new File("C:\\Arquivos de Programas\\Winamp\\winamp.exe"));
        } catch (Exception e) { 
            e.printStackTrace(); 
        } 
    } 
}