This is not exactly modding per se, but it does have to do with the files of NS2, so I thought I would share it here.
Description
I've written a small tool to extract the sound samples of FSB files, and I just recently made it compatible with the FSB5 format, which is what NS2 uses now.
I'm aware of the FMOD Designer program, but if all you need is to extract and play the music, then you don't really want to install a large program.
FSB Extractor - FMOD Sample Bank Extraction Tool
With the tool, you can display and extract the sound samples contained within an FSB file. FSB stands for "FMOD Sample Bank".
Supports the FSB3, FSB4 and FSB5 file formats. Currently, there might be a few issues with FSB5, but the basics should work.
This program was originally made to open the FSB files of "Dragon Age", but has since been expanded into a general FSB Extractor.
Official Site
http://aezay.dk/aezay/fsbextractor/
Direct Download
FsbExtractor13.03.09.rar - Support for FSB files with basic headers.
FsbExtractor13.02.11.rar - Proper FSB3 and FSB4 mode flags. Changes to how the WAVE header is written.
FsbExtractor13.01.13.rar - Properly detects FSB5 sample format, including Ogg Vorbis. Fixed a few errors.
FsbExtractor13.01.04.rar - Samples with same name no longer overwrites each other. Directory listing for other FSB files in same folder.
FsbExtractor12.12.20.rar - Support for command line parameters and detailed verbose logging.
FsbExtractor12.07.03.rar - It now fully supports all FSB5 files of NS2.
FsbExtractor12.06.29.rar
FsbExtractor12.06.26.rar
FsbExtractor12.06.15.rar