FFT and Convolution in AS3 - actionscript-3

Question

I am trying to load a MP3, and a HRTF file (wav) and then by Convolution to produce another output audio signal but I am a bit stuck how to do it.
sound1 = new Sound;
sound1.addEventListener (Event.COMPLETE, completeHandler);
sound1.load (new URLRequest ("test.mp3"));
channel1 = sound1.play (0, int.MAX_VALUE);
function completeHandler (event:Event):void
{ bytes1 = new ByteArray;
samples1 = new <Number> [];
fft1 = new FFT;
addEventListener (Event.ENTER_FRAME, enterFrameHandler);
}
function enterFrameHandler (event:Event):void
{ // get bytes of 512 samples
bytes1.position = 0;
sound1.extract (bytes, 1024, channel1.position * 44.1);
// get samples of left or right channel
bytes1.position = 0;
while (bytes1.bytesAvailable > 0)
{ samples1 [int (bytes1.position / 8)] = bytes1.readFloat (); bytes1.readFloat();
}
// analyze samples1
fft1.analyze (samples1);
var limitHz:Number = 5000;
var i:int=0;
var n1:int = fft1.magnitudes.length * limitHz / (44100 / 2);
// And then here I should somehow multiply the signal1*signal2?
for (i = 0; i < n1; i++)
{ var sound1Mag:int = fft1.magnitudes [i];
var sound2Mag:int = fft2.magnitudes [i];
//......?????
}
}
Any help will be much appreciated.
OK, I edited to mention that the second file is not wav but a MP3 too (I converted the wav to MP3)