Not every Audio file is there...

What I did: I extracted my data.win from Undertale via executing the program and then looked into the generated "Audio" folder. Now, my problem is, that, when i open the data.win in UndertaleModTool, I can see some audio files in "Sounds", like for example "mus_kingdescription" (UndertaleEmbeddedAudio#195), that i cant see in the extracted Sounds folder...