How is this done?
I've unpacked many asset files and they're all just junk.

There's this app for Windows.

It's a .jar (Java archive).
So you need the newest Java installed (https://www.java.com/en/download/installed8.jsp).

Disunity
https://github.com/ata4/disunity
Download and extract somewhere.

You need to use a command prompt (CMD) to run it on the console window.

java -jar "filepath\disunity.jar" <command> <file>
Change "filepath" to where ever you downloaded and extracted to.

For me, I put in:

D:\Bin\disunity_v0.3.2\

So my command line looks like this:

java -jar "D:\Bin\disunity_v0.3.2\disunity.jar" <command> <file>

You'll mostly want to use the "extract" command.

java -jar "filepath\disunity.jar" extract <file>

There will be a "README.md" file in there, you can open with Notepad.exe and read more about the program.

There are no GUI's or front-ends for this.

Thanks Sparky, I'll try that out.

Help!

Does anybody know a way to extract OGG Vorbis from an FSB?
Every time I've done it, they're unusable.

This should work for you :)

FSB Aud Extractor (http://www16.zippyshare.com/v/1TQv5CWf/file.html)