FSB File Extension

FMOD Sample Bank Format
- File Type fsb
- Developer Firelight Technologies
- Popularity
- Application FMOD Ex Programmers API
- Category Audio Files
- Format Binary
What is a FSB file?
Files with the FSB extension are specifically tied to FMOD Sample Bank Format, a Audio Files type, and there are 667 files in this category.
With the creation of the FMOD Sample Bank Format (FSB), Firelight introduced file format along with 4 programs built for their use.
FSB file support extends to various operating systems, including Windows, Mac OS and Linux. You can open a FSB file using one of 12 programs, for example FMOD Ex Programmers API, FMOD U3E Integration and FMOD Designer.
File Signature
HEX code: 46 53 42 33. ASCII code: FSB3.
Programs that support FSB files
How to open a FSB file?
The most common reason why a FSB file cannot be opened is the absence of required software. To fix this, select a compatible program from the list. Then visit the official developer website via the provided link, download the program, and install it on your system.
Thanks to their popularity, FMOD Ex Programmers API, FMOD U3E Integration and FMOD Designer are often the go-to programs for managing FSB files. To install the updated version of FMOD Ex Programmers API, simply go to the Firelight site and download the installer compatible with all major platforms.
After setup, the operating system should recognize FSB files and link them with FMOD Ex Programmers API.
Set FMOD Ex Programmers API to open FSB by default
Change default apps on Mac
- Right-click or use Control + Left-click on the desired FSB file to access the file’s context menu;
- Choose "Open in Application" and click "Other";
- Scroll down to the bottom of the window, and there you will find the "Enable" menu. The default selection is "Recommended Programs";
- Choose "All Programs" within this menu and locate FMOD Ex Programmers API. Check the box next to "Always open in app" to set it as the default program.
Change a default app in Windows
- Start the process by right-clicking on your FSB file and selecting "Open With". From there, click "Choose another app" to continue;
- Find the FMOD Ex Programmers API application in the pop-up window and select it as your preferred program;
- Select the "Always use this application" check box and click "OK" to save your selection as the default application for opening FSB files.
Easy FSB Troubleshooting
FSB files can sometimes be tricky, but minor software adjustments usually resolve the issues. Refer to the tips below for guidance.
Why does FMOD Ex Programmers API stop responding or crash intermittently?
Lack of regular software updates can cause FMOD Ex Programmers API to crash. Make sure you have installed the latest updates for Firelight products.
Restarting your computer is often an effective solution to resolve various common problems. Therefore, it is recommended to do so before making any changes to the software configuration.
What are the best practices for repairing a FSB file that has gone bad?
Start a recovery program, open the damaged FSB file and then select the "Repair" menu item to start the repair procedure. Please wait patiently for the recovery process to finish as it will automatically repair the damaged audio files.
How can I confirm if my FSB file has been damaged?
Characteristics of corrupted FSB audio files can include:
- Editing the archive in FMOD Ex Programmers API is hampered by poor overall performance;
- Trying to work with the archive in FMOD Ex Programmers API or other programs causes instability or program crashes;
- The file does not open correctly or displays error messages;
- An unexplained increase in the size of the FSB file;
- The file operation is accompanied by the display of error messages;
How to edit a FSB file?
To modify FSB files, you need to install special software that makes it possible to open and edit audio files. Online FSB editors are more restricted compared to software designed for FMOD Sample Bank Format.
Best FSB editors 2026
Based on your described criteria, here is a list of available FSB editors.
| FSB Editor Software | Developer | Platforms | Overall Rating |
|---|---|---|---|
| FMOD Designer | Firelight | Windows | 4.6 out of 5 (41 review) |
| FMOD Ex Programmers API | Firelight | Windows | 4.5 out of 5 (37 reviews) |
| FMOD U3E Integration | Firelight | Windows, Mac OS, Linux | 4.2 out of 5 (41 review) |
Convert files to and from FSB
If obstacles arise while working with a FSB file, you may convert it to formats like MP3 or other similar types for smoother handling.
After converting a FSB file, some capabilities may be limited, but you can often convert it back to the original format.









