AS2 Sounds play once while repeating the animation clip

programming flash
1

I want my sound play only once, I make 3 buttons which the enter, repeat intro and obcourse the play and stop button on the other side.On the 1 and 2nd frame on my timeline i put the preloader so the animation start in frame 3.
My only problem is once I click the repeat intro, the sounds play again and sometimes it overlaff the sound to the previous music. I have already on and off buttons so what i want is if I click the repeat intro i want only animation will play the sounds will continue playing…here is my code in the repeat intro button:if anyone have an idea to fix this kindly help me. many thanks!
I attached my swf output.

on (release){
gotoAndPlay(3);
stopAllSounds();
}