new_contents: from flask import Flask, request, make_response
  import plivo, plivoxml
  
  app = Flask(__name__)
  
  @app.route('/play/', methods=['GET','POST'])
  def play_xml():
  
      # Generate a Play XML with the details of audio file to play during the call
  
      body = "https://s3.amazonaws.com/plivocloud/Trumpet.mp3"
      r = plivoxml.Response()
      r.addPlay(body)
      ret_resp = make_response(r.to_xml())
      ret_resp.headers["Content-Type"] = "text/xml"
      print r.to_xml()
      return ret_resp
  
  if __name__ == "__main__":
      app.run(host='0.0.0.0', debug=True)
  
subject: Create outbound_mp3_call.py