Code:
on *:NOTIFY:{
 if ($nick == nick1) { splay $mircdirwav\nick1.wav | goto end }
 if ($nick == nick2) { splay $mircdirwav\nick2.wav | goto end }

 if ($nick == nick3) { splay $mircdirwav\nick3.wav | goto end }
:end
}

and that goes to your remote.. ALT + R in mirc.. just remember to place the wav files you want to use in your mirc dir/wav/ ..