The GOG game page shows this messge:

Included with every copy of the game is the digital Golf Club: Wasteland Official Soundtrack plus a Graphic Novel Art Book that further expands the back story of the lone golfer Charley in a stunning visual format.

I cant find the links to download these extras. My game library for golf club wasteland only contains the game download link and nothing else. Using gog galaxy offers an extra link to save game progress to the cloud, but nothing else.

I am able to find the extra downloads for other games I have purchased, but not for GCW. Where else can I look?