I mean the OST, I saw that you could get the soundtrack https://steamcommunity.com/app/292030/discussions/0/451848854990139022/, In the game install folder. However in the Witcher 3 Support it saysIt did. It had 16 free DLC, plus two paid expansions (HoS and B&W). However, if you have the GotY edition I think the paid expansions are included with that.
Soundtracks should automatically be added to your Steam Library when purchased, but you'll still need to install them. Other types of files, like digital artbooks, are usually located along with the game files that are downloaded by Steam.
- Click here or navigate to your Games Library in Steam
- Select the dropdown below the Home button in the upper left corner and check the Soundtracks box.
- If a soundtrack is not shown here, you'll likely need to install the base game first.