streaming sound start control

Hello,

I load a streaming sound
AudioObj.loadSound("song1.mp3", true);

But I don't want it to start immediately, first an image has to be
loaded. So I do
AudioObj.stop();

now the image has loaded and I do a
AudioObj.start();

But now the AudioObj waits itself until it's completely loaded. Like an
event sound.

hhmmm.... why?
what should i do?

josp