[Plugin: Audio Player] How to run once, not after page reload.

I’m suing the Audio Player plugin by Martin Laine to play a “registration instructions” audio clip when someone is registering on my site. Once the form is submitted, the page is reloaded with a “Thanks you, please Log In” message and link. The problem is the audio play reloads and I have it set to “autostart=yes” so the clip plays again. My question is how can I keep it from replaying when the page is reloaded? Possible?

Thanks!