Flash: "I've run out of chocolate"

I've completed my flash animation and I am fairly pleased with the end result. However when I imported the chocolate images into Flash. even though I had edited out the white backgrounds they seeemed to reappear, and if I were to do this again I would try to find out how to correct this, as it held me back from being able to put in a large background.

I found the lip synching itself quite interesting to do, though frustrating at times and I felt as though I could have used several more mouth pieces to create an accurate look.