[smamyan]

var my_sound:Sound = new Sound();
var pos:Number; // poziciya s kotorogo nachinaetsya vosproizvidenie
my_sound.attachSound("myLibSound");

stop_btn.onRelease = function() {
trace("sound stopped");
my_sound.stop();pos=my_sound.position;
};
play_btn.onRelease = function() {
trace("sound started");
my_sound.start(postion);
};
postion - vremya s kotorogo nachinaetsya proizvidenie v sekundax
ti mojesh zasech vremya kogda ostanavlivaesh zvuk s pomashyu - my_sound.position