Sorry, for the double post - I wasn't logged in.
The Imp, thank you for your most informative message.
Althoug, I did some tinkering and here's how it is. I recorded my soundset and saved the files as WAV using the names provided by Rhaella. Next step was to put them in the "override" folder of BG2EE... and that's it. After starting the game and meeting with Adrian for the first time the soundset just works. I would've attach it just as tatterdemalion did it, but I can't seem to find the right button to do it. Would anyone be interested, though? And now that I'm logged in I can.