I am using PNG's.
Since I need to swap some images should I turn them into symbols?
Can you swap PNG images?
Yeah, you can swap PNG images.
Just right-click them and choose Swap Bitmap....
Thank you Joao,
That was quick.
Swap works with PNG, no need to make them be a symbol. Select the bitmap that is on the stage and click the Swap button (which is a right arrow over a left arrow icon these days), then choose the replacement from the list you are shown.