JQuery :: Automatically Perform A Function As Soon As The New Class Appears?

I'm using jquery file upload - when each file has uploaded, the name of the file appears, and I've added a check button:

<td colspan="2"><span class="ui-icon ui-icon-check"></span></td>

What I'd like to do is make jplayer fire off a "ding" sound as soon as each file is up.

For example (just to test)

$('.ui-icon-check').live('click', function() {
$(this).css("background-color","yellow");
});

needs an action, like a click or a mouseover or something. For each file that arrives, and therefore adds another instance of ui-icon-check, I'd like to fire an event. A weekend of googling has really only turned up Live Query from 2007, which works perfectly with

$('.ui-icon-check').livequery(function(){
$(this).css("background-color","yellow");
});

[Code]....

So am I totally mis-understanding the point of live, or just mis-using it?

I'm doing it this way rather than mess with the uploader code as he's updating the code all the time, and the more I can stay away from code code the better I think.