Well the latest proton beta ships with FAudio so you could use that in Lutris but I haven’t really experimented with howto.
Also it will be part of wine eventually. https://www.phoronix.com/scan.php?page=news_item&px=Wine-FAudio-Merge-Plans
On ARCH I think I used the FAudio 32/64 wrappers. Again I did it a very manual way where once it compiled the DLL’s I symlinked them in the windows DLL folders (wow64 and win32 directories)
Then launched a game in debug terminal mode to inspect if it was loading them correctly and discovered it couldn’t find other dependancies as it was looking exclusively in those folders so I just symlinked them in, was like 30 dependancy files.
A script could totally be made to do it for people but again I’m on ARCH and things don’t always cross over very well to Ubuntu stuff.
Your best bet is to wait until FAUDIO because a standard, atm its just experiemental, yes it works flawless for FO76 but that doesn’t mean they will jump on it for wine use just yet, those guys are slow to adopt!
Latest proton beta has it ready apparently… but you need to learn howto use proton via lutris and wire in FO76, last time I tried that it kept trying to run via steam or some nonsense which spat a error.
PS. I used these but had to do some manual stuff as you will discover in the comments section.