This box set contains five unmarked CD-Rs in unmarked digipaks, each one including only one unbroken track. Some listeners theorize the five discs are intended to be played simultaneously like Zaireeka by The Flaming Lips. The title Monolith as well as the result of combining the tracks have been cited as evidence for the theory by fans. Producer Travis Dickerson declined to solve the mystery.
Currently, this set is exclusively available on the TDRS website.