problems with sound script (solved)

[Nice]

Hello all i've started with map editing in scripting yesterday so i'm a 100% beginner. Anyway i've manage to add 2 succesfull scripts so far (that work as intended). One that door closes behind me and one for unlocking the door with a key..

Now i decided to make a sound one.. ( If a player steps into area he hears a sound). I've tried messing around a bit with the script but i cant get it to work. Whenever i run my CS the game crashes with a fatal error. Heres my sound script :

{
AddEntityCollideCallback("player", "Music_1", "start", true, 1);
}

void start(string &in asParent, string &in AsChild, int alState)
{
PlaySoundAtEntity("", "amb_idle03.ogg", "Player", 0, false);
}

So can you tell me what i did wrong ? And i know the mistake is probably obvious and i did all horribly wrong but cut me some slack, i've only just begun with map making/scripting yesterday