What Is an FSB File?

How to open, edit, & convert FSB files

A file with the FSB file extension is an FMOD Sample Bank Format file. These files store sound information, like music and speech, for video games designed for popular console systems like the Xbox, PlayStation, and others.

An FSB file is created alongside an FMOD Audio Events file (.FEV) when an FMOD Project file (.FDP) is built.

If your FSB file isn't used with video games, it's probably a Form-Z Compiled Script file. This kind of FSB file stores plug-ins that have been compiled from a Form-Z Script file (.FSL). They normally come as a ZIP archive.

FSB files in Windows 10 that open with Game Extractor
FSB Files That Open With Game Extractor.

FSB also stands for file selection box and fast super bus, but neither of those terms have anything to do with FSB files.

How to Open an FSB File

Most FSB files you encounter within a game were probably created with FMOD Designer. Extract the sounds within an FSB file using a program like FSB Extractor or Game Extractor.

FSB Extractor downloads as a RAR file. You'll need a program like PeaZip in order to open it. Then, just select the FsbExtractor.exe file to open the tool.

If you'd rather not extract the audio data from the FSB file but instead listen to the files directly, use Music Player Ex. You may need 7-Zip to open this program since at least one version of it is made available as a 7Z file.

Form-Z opens FSB files that are compiled scripts. Copy the FSB file into the "scripts" folder of the Form-Z program's installation folder. The plug-in should be ready to use after you've restarted the program.

If you find that an application on your PC does try to open the FSB file but it's the wrong application or you'd rather have another installed program open FSB files, change the default program used to open FSB files.

How to Convert an FSB File

You can "convert" FSB to MP3 or WAV with the FSB extractors mentioned above. This lets you play the audio with a standard music player. If the final audio format isn't the one you want the file to be in, use a free audio converter tool.

It's possible that Form-Z scripts can be converted to another text-based format like TXT or HTML. If Form-Z doesn't support it, you might have luck with a text editor.

Still Can't Open the File?

If your file won't open at this point, there's a really good chance that you're not dealing with an FSB file. This might happen if you've misread the file extension, mistaking another file for one that ends with .FSB. This is actually pretty easy to do.

For example, maybe you really have an FSS file. Although it looks like it could be related to FSB files, they're really partial archives used by a program called Splitty.

Other examples could be given as well, such as confusing an FXB, FS (Visual F# Source), or SFB (PlayStation 3 Disc Data) file with an FSB file.

If you don't have an FSB file, start your research over from scratch using the actual file extension that's at the end of your filename. This is the best way to learn what format it's in and what program you need to have to open it.