Doubt on accessing mc with as30


I have a MC that has 3 layers each one with one asset making a squared form with its border and an image as its background. I have right clicked it and set a linkage name for the whole group or MC. My question is, using AS3 in an external as file how do I reference the image inside this MC because I am exporting for AS the whole group with a name playlist. I know that in AS 3 I have to create a variable like this :

var test : playlist = new playlist();//this test would be the mc inside my fla file rigth?

if I do this will I be able to access an image inside this MC that contains all the assets?

thank you