heres a code i use to play a movie on a model should be pretty much the same.

Code:

---

var tv_handle = 0;
	function new_tv()
	{
		if(event_type == event_scan && media_playing(tv_handle)== 0)
		{
			media_play("01.avi",bmap_for_entity(my,2),100); 
			tv_handle = media_handle;	
		}
	}


	action activate_TV// action to attach to tv	
	{
		//TV = me;
		my.enable_scan = on; // sensitive to scans
		my.event = new_tv;// run tv_on_off if im scanned
		while(1)
		{
			if(media_playing(tv_handle) != 0)
			{
				my.skin = 2;
			}
			else
			{
				my.skin = 1;
			}
			wait(1);
		}
	}
  

---

Hope it helps/