Quick question

I’ve got a simple timer set up… thanks to the guys at this forum. heres the code for the frame:

stop();
timer1=timer2=timer3=timer4="00";
var IntervalID;

function startTimer()
{
    this.onEnterFrame=function()
    {
        timer1=getTimer();
        timer1=timer1%100;
    }
    IntervalID=setInterval(timer,1000);
}
function timer()
{
    timer2++;
    if(timer2>59)
    {
        timer2="00";
        timer3++;
    }
    if(timer3>59)
    {
        timer3=0;
        timer4++;
    }
    timer2=attachZero(timer2);
    timer3=attachZero(timer3);
    timer4=attachZero(timer4);
}
function stopTimer()
{
    clearInterval(IntervalID);
    delete this.onEnterFrame; 
}

function attachZero(time)
{
    if(time>0 && time <10)
    {
     time="0"+parseInt(time);
     return time;
    }
    else
     return time;
}
function restart()
{
    stopTimer();
    timer1=timer2=timer3=timer4="00";
    startTimer();
}

this is the code for the start button:

on(release)
{
    startTimer();
}

and this is the code to stop the timer.

on(release)
{
    stopTimer();
}

and it works great. however, i have inserted some music via actionscript. here is that code:

var lol:Sound = new Sound();
lol.attachSound("omg");
lol.start(0, 10);

heres my problem: when i start the timer with the start button, it stops the music… why is that, and how can i prevent it?