addEventListener ENTER_FRAME - actionscript-3

Question

when I try to make a addEventListener I get an error:
Line 20 1046: Type was not found or was not a compile-time constant: Event.
package player {
import flash.media.Sound;
import flash.net.URLRequest;
public class Stream {
private var _Sound = null;
private var _Channel = null;
function Stream(){
this._Sound = new Sound();
}
public function play(url){
this._Sound.load(new URLRequest(url));
this._Channel = this._Sound.play();
this.addEventListener(Event.ENTER_FRAME, this.myFunction);
}
private function myFunction(e:Event){
}
}
}

Answer 1

import flash.events.Event; goes at the top under package player {.
You need to import the event before using it.
Update:
package player {
import flash.events.Event;
import flash.media.Sound;
import flash.net.URLRequest;
import flash.display.Sprite;
public class Stream extends Sprite {
private var _Sound = null;
private var _Channel = null;
public function Stream(){
this._Sound = new Sound();
}
public function play(url){
this._Sound.load(new URLRequest(url));
this._Channel = this._Sound.play();
this.addEventListener(Event.ENTER_FRAME, this.myFunction);
}
private function myFunction(e:Event){
}
}
}
Use this code. Generally, you want to add an ENTER_FRAME event to a display object. The Sprite class is a display object. I'm making it a Sprite by using the extends keyword. Please note that you need to import the class you're extending, as I've done.

Answer 2

The instruction:
this.addEventListener(Event.ENTER_FRAME, this.myFunction);
uses this to self-reference the player instance, but this.myFunction is redundant since myFunction is already a method belonging to the player instance.
Instead use:
this.addEventListener(Event.ENTER_FRAME, myFunction);