Simple play and stop button

1

I simply created an movieclip called it themusic as instance
and put a sound init

Now on the firstframe i added these actions,

the problem is the music just keeps going , it has no effect

the code

 
play_btn.onPress = function ()
{
 trace('playing' + themusic);
 //themusic.stopAllSounds();
 themusic.play();
 
 
};
stop_btn.onPress = function ()
{
 
 trace('stopping' + themusic);
 themusic.stop();
 
 
};

Any ideas what im doing wrong,
it must be realllllllllllllllllllllllllllly simple , but i am lost

ps the trace does show up when i click them buttons