Once downloadable from Frank Klepacki's official homepage.

These are the comments to the tracks:
#01 - This is the intro to the game of Old Sally taking Kats daughter by surprise and then telling her the story of Black Kat
#02/04/07/10/13/15 - One of several epic sea battle themes
#03 - The main villain theme of Captain Hawk
#04 - One of several epic sea battle themes
#05 - Kat fights the pirate Blackbeard
#06 - Kat fights a Giant Crab on the Haunted Island
#08 - This is the cinematic of the first time Kat speaks with Duncan, and you can hear the mixture of mystery combined with mistrust and attraction at the same time.
#09 - The theme when Kat fights the Valkyrie and 2 wolves in the snow
#11 - The cinematic of King Neptune rising from the ocean to speak with Kat
#12 - The theme when Kat fights the Lava Golem boss
#14 - The theme for Kat fighting the Ice Demon boss
#16 - This is the theme for Hawk when he becomes the sea demon and battles Kat in a vicious storm on sea.