wiki.mbirth.de/know-how/hacking/nintendo-ds/_posts/2009-03-17-extract-sound.md

title	language	layout	created	updated	toc	tags
Extract Sound from ROMs	en	default	2009-03-17 20:41:05 +0100	2009-03-17 20:41:05 +0100	false	know-how hacking hardware nintendo gaming

To extract sounds (or graphics) from a ROM, you'll need the [ndstool]({% post_url 2009-03-16-ndstool %}) and ndssndext.

First extract the game data from ROM:

ndstool -x -d data <filename>.nds

This will create a new directory data containing all the game data. In there you'll most probably find a file *.sdat somewhere. This is a sound archive format. Now run this through the ndssndext (I had to use WinE):

wine ndssndext.exe sound_data.sdat

This creates a new folder which contains more folders with the actual contents from the .sdat-file. These can be MIDI files and/or (converted) WAV files.