Try using this tutorial:
http://www.swbfgamers.com/index.php?topic=14327.msg124839#msg124839
I think you might have an issue with the directory.

Glad to see you back modding. Used to love the platforms map you made back in the day.

Try using this version of BFBuilder

How to configure the modtools to implement sound.

Before we begin:
This tutorial doesn't include how to set up the sfx and req files, so if you want to do that go to http://secretsociety.com/forum/display_message.asp?mid=323 and come back to this tutorial after doing so.
It assumes you downloaded the modtools from http://www.swbfgamers.com/index.php?action=downloads;sa=view;down=1219

1. Create the directory C:\LucasArts.

2. Open the modtools you downloaded and take the folder called BFBuilder and copy it in C:\LucasArts so the address should be C:\LucasArts\BFBuilder.

3. Open up BFBuilder, then Data\_BUILD_PC\PremungedSoundConfig.

4. In there you should see a folder called Sound copy and paste to the Data\_BUILD_PC folder you were just in.

5. Now go to DataModID and right click on soundmunge.bat and click on edit.

6. You want to edit the second line so it reads:
@if /i %1==pc set BANKOPT=-template -stub c:\windows\media\chord.wav
and click save.

7. Adjust the sfx and req files appropriately, they are located in DataModID\Sound\Worlds\ModID.

8. Run clean.bat and munge.bat and there should be a sound.lvl created.

Now that's it! Play the game and test it out! If it didn't work leave a reply and I'll try to help.
It should also work on 64bit computers - It does on mine!

Quote from: Napseeker on August 14, 2020, 12:13:09 PM
Try taking a look at the Chain Isle  ("Datachainisle") project as that is small SWBF1 project that demonstrates how to add custom sound and music to your map.

https://www.swbfgamers.com/index.php?topic=7378.0

The sound stuff is tricky, I don't entirely understand all of it myself either but this project gives you an idea of what files you have to set up. 

Thanks for the suggestion, interestingly enough custom sounds munge on my machine

Hi all, could anyone please help me out with munging sound, firstly I tried to munge sound on a 64 bit PC however, I soon found it is impossible to do so on x64 architecture. So I attempted to munge on an XP pro 32bit PC, this also didn't work, therefore I assumed it was a fault of my own. Later on I had another go at munging a released data file on the 32 bit system and discovered that it also hadn't munged the sound and the vehicles were mute. Could any of you please help me, it'd make my day and would be much appreciated.