Prevent streaming sound from starting to play automatically?

I created a basic audio player which loads an external MP3 using the ‘loadSound’ method.
I want to be able to play the MP3 before it is downloaded completely, so I used the ‘streaming’ option.
The MP3 then starts playing automatically if sufficient data has been received.

Is it possible to prevent this? So it only starts playing when the visitor of the site clicks the play button?