title: Run two commands at once in python script
body: <p>I am trying to get two things to work at once when the C command is used.</p>
  
  <pre><code>    if command == 'C':
              os.system('aplay /home/pi/sound/cclaw.wav')
              motor = mh.getMotor(3)
              motor.setSpeed(150)
              motor.run(Adafruit_MotorHAT.BACKWARD)
              time.sleep(2.5)
  </code></pre>
  
  <p>The sound plays then the motor runs. I need the sound to play at the same time as the motor runs</p>