Mm.. I tried it with The Witcher 1, but the EAX option remains grey. EDIT:
wait, I had to select the location of "witcher.exe" not "launcher.exe" XD
I've enabled it now, thanks Dalthnock :)
Btw, I've no idea if it's simulating EAX properly.
It surely increased the game volume. ¯\_(ツ)_/¯
The last Alchemy version uses "dsound.dll" v184.108.40.206, whilst the Universal uses v220.127.116.11.
It's quite behind indeed..
I tried to simply replace the old file with the new one, but alas it didn't work.
Yeah, you always have to select the folder with the main executable. The only game that gave me a headache was BioShock, but I eventually got it running.
EAX won't do any miracles, just add some echoes & the like in some areas. You can notice it quite well in Prince of Persia Sands of Time & Baldur's Gate. Another advantage with this tool is you can select hardware sound instead of emulated. It's mostly louder (Neverwinter Nights does this too), but there's also some increase in quality.
It's out of date, sure, but it works 100%. Unless you want to keep cracking updated Creative releases which may or may not work, I'd advise you to stick with that version. I doubt there'll be any increase in quality, anyway. It's still an on-board soundcard emulating EAX. I certainly never bothered updating.