To mod these files, you need a way to unpack the "suitcase," swap the contents, and zip it back up. Here are the most reliable tools available today:

# After downloading fmod_bank_extractor.zip unzip fmod_bank_extractor.zip ./fmod_bank_extractor game.bank output_folder/

Unzip the folder to your desktop (e.g., C:\FMODTools\ ). You should see files like extract.py (if Python based) or FMODBankTool.exe .

Click Rebuild in the tool. The new modified bank files will be generated in the /build folder, ready to be moved back into your game's directory. Alternative and Complementary Tools