So in case people didn't notice in the credits, Darwinia's music comes from a techno site called ww.trash80.net. And if you wanted to listen to the end level music in iTunes, the site has full mp3s of all the music from Darwinia, plus lots of other tracks not used.
The site.
The names of the tracks from Darwinia I've found are Schroeder's Failure, Excuses, Faces of a Fashion, and pain fade down. To access the music, just click on the right side of the site where it says tresk web releases and trash80 web releases, and you can then listen to any song on the site, enjoy.
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Darwinia Music
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