Code:

---

sound snd_hello = <hello_player.wav>; // your wav (adjust)

action statue {
var lv_snd_dist = 100; // 100 quants for play (adjust)
var lv_snd_flag = off; // sound played

  // wait for player...
  while(player==null){wait(1);}

  // statue loop
  while(1){
    // play when approaching
    if(vec_dist(player.x,my.x)<lv_snd_dist && lv_snd_flag==off){
      snd_play(snd_hello, 100, 0);  // play the sound
      lv_snd_flag=on; // play not again until player is gone...
    }else{
      lv_snd_flag=off;  // ready to play again...
    }
    wait(1);
  }
}

---

or if it should loop...

[EDIT]
Code:

---

sound snd_hello = <hello_player.wav>; // your wav (adjust)

action statue {
var lv_snd_dist = 100; // 100 quants for play (adjust)
var lv_snd_hdl; // sound handle

  // wait for player...
  while(player==null){wait(1);}

  // statue loop
  while(1){
    // play when approaching
    if(vec_dist(player.x,my.x)<lv_snd_dist && !snd_playing(lv_snd_hdl)){
      lv_snd_hdl=snd_loop(snd_hello, 100, 0);  // play the sound      
    }

    // stop loop
    if(vec_dist(player.x,my.x)>lv_snd_dist && snd_playing(lv_snd_hdl)){ 
      snd_stop(lv_snd_hdl);
    }
    wait(1);
  }
}

---

[/EDIT]

not tested but should work...

mercuryus