Hi, I'm very new to flash and I am kind of getting frustrated with this one thing i am working on:

I have a button in which first off, on mouseover changes to another image (ex. glowing/highlighting).
A feature I wanted to add was when the button is clicked, a sound clip begins to play.

However i have a number of problems:

1. You can keep clicking the button and it will constantly start up the clip again causing it to overlap and play a million times
2. I want it to STOP playing once i click it again. and then start again when i click it after it has stopped.

Are there any ways to do this?
Thank you!