Sound stop/play buttons

Hi - I am trying to make a background loop which will play automatically when a page loads and to display a stop button which will stop the music when clicked.
I managed to do this much, however, when the stop button is clicked, I would like to display a play button which will start the music again when clicked. I could not figure out how to do this. I’ve read several tutorials, but some of them seem outdated and others did not seem to work.
Can anyone give me some advice or direct me to a tutorial which would explain how to do this correctly?
Here is the FLA so far: http://www.seniorspin.com/MyMusic.fla
Thanks, Elizabeth