script help

integer listenHandle_a;


default
{
    state_entry()
    {


        listenHandle_a = llListen(12, "", NULL_KEY, "");

    }

    listen(integer number, string name, key id, string message)
    {
     llSay(1,name);
           if (number == 12){
            llSay(2,  message);

            if(message=="Spin"){
            llTargetOmega(<0,0,0>,0.0,0);
   //this sound keeps on looping>  llPlaySound("c089f308-b20e-390a-0527-2d16fc171c9f" ,1.0);
            llSleep(4.0);
            llLoopSound("f85483e4-5a10-8ead-a7ed-b8c8fd31bdef" ,1.0);
           }
           if(message=="Stop Spin"){
             llTargetOmega(<0,0,0>,0.0,0);
            llPlaySound("8b29ec00-6fa7-fb41-40da-3f343c3f6816" ,1.0);

           }
         }
    }

}