In 2010, three transmissions were received from a distant superstructure in deep space. The data was interpreted, reformatted and released on playable disks which were sent out in the hope that someone could identify their origin and meaning. No such response or explanation has yet been received, but some time after the production of these disks, a fourth unexpected transmission was recorded. As before, the data was transformed into readable audio files, and is now posted here as an addendum to the previous effort in 2010. Do you know what this is, or what it means? Perhaps the answer is too much to bear for our simple minds. In time, an explanation will present itself, no doubt. The only remaining question then would be "Who will be listening?"