[looker]

Symbol=Symbol 5, Layer=Layer 15, Frame=1: Line 1: Statement must appear within on handler
_root.my_sound = new Sound();

Symbol=Symbol 5, Layer=Layer 15, Frame=1: Line 2: Statement must appear within on handler
_root.my_sound.attachSound("bg");

Symbol=Symbol 5, Layer=Layer 15, Frame=1: Line 3: Statement must appear within on handler
_root.onMouseUp = function() {