SoundReaver is tool for extracting sound effects from PC-version of Soul Reaver 2 game.
Place *.smf files to "input" folder and run soundreaver.exe.
You can get *.smf files from "pcenglish" folder wich you can extract from bigfile.dat with tool "Soul Spiral": https://www.thelostworlds.net/Software/Soul_Spiral.html
SoundReaver uses SoX - Sound eXchange to convert RAW data to WAV. If you build SoundReaver from sources, please, download latest release of SoX for Windows here: https://sourceforge.net/projects/sox/files/sox/ and place sox.exe and all *.dll files which come with it to folder with soundreaver.exe.
You can get builded releases here: https://github.com/Brullworfel/SoundReaver/releases
Everything you need is included, except for *.smf files (read the instructions).