Installing commentary on the PC version typically involves adding and .big files to your game directory.
FIFA 14 supports a wide array of commentary languages. Depending on your region, you might need to download a specific pack. Here are some of the most common language files available from community archives like Scribd and Google Drive: Estimated File Size Spanish (Mexican) Spanish (European) Arabic French Italian Portuguese (Brazilian) How to Install Commentary on PC
Usually found at C:\Program Files (x86)\Origin Games\FIFA 14\Game or wherever you installed the game.