Purchase the soundtrack for Ashes of the Singularity: Escalation, containing over 90 minutes of high-fidelity music from Richard Gibbs (Battlestar Galactica), Geoff Knorr (Civilization V, Civilization: Beyond Earth, Galactic Civilizations III) and Michael Curran (Civiliization: Beyond Earth, Civilization V: Brave New World, Galactic Civilizations III). This soundtrack DLC contains both FLAC and MP3 formats from the original production .wav files.

Go to: http://store.steampowered.com/ and download STEAM client Click "Install Steam" (from the upper right corner) Install and start application, login with your Account name and Password (create one if you don't have). Please follow these instructions to activate a new retail purchase on Steam: Launch Steam and log into your Steam account. Click the Games Menu. Choose Activate a Product on Steam... Follow the onscreen instructions to complete the process. After successful code verification go to the "LIBRARY" tab and start downloading.