Steam handles language packs slightly differently by managing them as game properties:
Once the files are installed, you can switch between them within the game’s main menu: far cry 4 language pack
Far Cry 4 supports a wide array of languages for its user interface (UI), subtitles, and full audio voiceovers. However, the availability of these languages can vary depending on the version of the game you purchased and your physical region. Full Audio and Interface Support and full audio voiceovers. However
Czech, Danish, Dutch, Finnish, Korean, Polish, Russian, Swedish, Norwegian, Simplified Chinese, and Traditional Chinese. How to Install Additional Language Packs far cry 4 language pack
Music