How to setup foobar2000 with the vgmstream component to play and extract the audio files from GTFO
Download and install foobar2000
Download and open
Open foobar2000 and choose File > Add Folder
Find and add the following folder:
~\Steam\steamapps\common\GTFO\GTFO_Data\StreamingAssets\GeneratedSoundBanks\Windows
Open the SoundbanksInfo.xml in a text editor to see what audio files the game uses
In foobar2000 search for the file id with Ctrl + F
Double click the audio to listen to it
In foobar2000 right click a track
Choose Convert > Quick Convert
Choose an output setting and click Convert
Select an output path and save