8 MP3 tracks with no unique titles, with a total length of 45:52. They're basically arranged versions of the music from the game, which you can individually extract yourself - along with about 10 more
minutes of music and
the sound effects from the game, all in OGG format - from the game's sound.dat file...by literally opening it in 7Zip. I love that, by the way. More games need to have their sound effects and such accessible.
As for DEFCON's music, it's still very good stuff; all around haunting, evocative, beautiful and very fitting. So if you want to support the musicians/developers, I would still recommend purchasing this. The arrangement makes for easy listening as well (technically easy, that is) so I'd say you still get decent value for your money.