I bought the game and the soundtrack, but I'm puzzled : what's the utility of the .exe for the soundtrack dlc, since we have archives with wav & mp3 version ?
I installed it and can't find anything special happened ?

https://www.gog.com/forum/general/midweek_sale_adrenalinefueled_titles_up_to_90_off_772ea/post15
MarkoH01:
"I can only assume here but I guess you are talking about seperate installers for the Soundtrack DLC even though you have the soundtrack already under your extras section? That's just a GOG bug that happened in the past already. In the past they simply deleted the additional installers from the library to avoid confusion so I guess you should simply ignore them. Again, these assumptions are based on things that happened in the past. Since I don't own the game myself these are mere specualations. "

I think it's very certainly the same situation :P