Missing binary data from socket

I try to play audio file from c++ socket server installed on user machine. Problem is that when i play file, it`s length is 1 min, but file which is sending via socket is 3 mins.

Here is my function for load data into byte array.

** loading data

private function socketDataHandler(e:ProgressEvent):void

                    {

                              if (socket.bytesAvailable)

                              {

                                        socket.readBytes(bytes, bytes.length, socket.bytesAvailable);

                              }

                    }

** play file

var sound:Sound = new Sound();

sound.loadCompressedDataFromByteArray(recordBytes, recordBytes.length);

sound.play();

Where i am wrong?