Update:
http://cdbaby.com/cd/
Synths include the Clavia Nord Wave, Nord Modular, and Stage, the Roland Juno-60, SCI Six-Track, the Korg Oasys, DSI Prophet'08 and Native Instruments' Massive and Absynth 4.
An interesting side note is that is was mastered by George Mattson of http://mattsonminimodular.com/.
Note the credits.
Carbon11 also hosts http://carbon111.com/, an excellent synth resource including some of the most extensive pages on the Serge modular as well as the Waldorf XT. Do check out the site for more.