GreedFall II: The Dying World .sau sound files

[wpnb666]

I extracted all the audio folder of greedfall2 and find there is over 20000 .sau files in it.What makes me confuesd is that this game is using wwise engine so I can find .bnk files and wem files(but I`m sure they are just part of the audio files) When I open .sau files with notepad then I find at the head and at the bottom. At first I think that they are just xml files. but many sau files have over 5mb size so I think they do contain real sound files. So can anybody figure out how to play them please? Thanks a lot.  here are somemedia.zipsamples