Actually getting the asset files into Flash can be done a couple of ways:
File, ImportThis is the best method from a workflow perspective because the sounds are placed into the Library only and are not embedded on any of the frames of your movie. When you are ready to use them, you can drag and drop them onto the stage or set them up for use with ActionScript.
Drag and dropSound assets can be dragged and dropped into a movie either directly from the file system or from the library of another movie. This method is useful if you already know where you want to place the sound on the timeline and you have everything set up and ready to go.