The OST for Dead of Night will be free and will come with the game. All you will have to do is go to the install folder and all the tracks should be available once the game is released. Until then here are a few links for two of the tracks in the game.
https://soundcloud.com/blowfelt/dead-of-night-theme
https://soundcloud.com/blowfelt/dead-of-night-a-night-on-the-tiles
Thanks!