addEventListener removeEventListener or?

I have made the flash file into CS3 and simplified the idea a bit. Basically I want to click the box on the right to start playing the song and the spectrum and then if I click it again it will stop playing the song and the spectrum then if I click it again it will start playing again ect ect. I could not upload the song.mp3 cause the file size was too big you will have to replace it with another mp3 in the root of the folder and name the mp3 song.mp3. Thanks and best regards.

If you do not place an MP3 in the root and name it song or song.mp3 if your computer is showing extensions there will be an error.

Sorry I didnt put the files in a folder so when you extract it extract it in a new folder so the files dont scatter all over your desktop or where ever.