Controlling audio files
I've attached a sample slide which I'm looking to improve. At the moment I've set it up so that when a user clicks on an image the assoiciated audio file plays. That works fine. I then want users to drag the image to the correct drop area. However when users click the image again obviously the audio file plays again. It makes the process a little 'messy'. Is there any way of changing this so that it only plays the once? I'm also happy to listen to any other suggestions as to how to improve this slide.
Thanks in advance.