Here is the right way to do it in AS3.
Initialization:
var sound:Sound;
var channel:SoundChannel;
var pos:Number;
var numLoops:Number = 0;
sound = new Sound();
sound.load( new URLRequest("song.mp3") );
channel = sound.play( 0, numLoops );
:
pos = channel.position;
channel.stop();
:
channel = sound.play( pos, numLoops );
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