Flipping page problem

Hello people. I bought a flip page component for a site I needed to create. I am having a problem with the cover page loading and playing when the user goes back from any page to page 2 (consulting). Each page is a different SWF file.
I couldn’t find why this is happening and the site where I bought the component from couldn’t give me any answer.
The link to the site is: [COLOR=#800080]www.thiez.com/ennio[/COLOR]
If you go to training, public speaking or contact and then back to consulting, you will hear that the presentation is playing.
Please feel free to tell me what do you need to understand the problem and I will provide it.

Thanks in advance