This small mod changes the way the UI sounds. I always hated the clunky feel of the NWN2 UI - especially the standard sound effect for opening and closing windows. I also changed the Volume of certain sounds of the UI and added a little reverb here and there.
Should feel and sound much better now...
Installation: Place the entire "sfx" folder (extracted from the downloaded zip-archive) in ...My Documents\Neverwinter Nights 2\ui\default
Uninstallation: Delete the "sfx" folder in ...My Documents\Neverwinter Nights 2\ui\default
10 - A Masterpiece, Genuinely Groundbreaking 9 - Outstanding, a Must Have 8 - Excellent, Recommended to Anyone 7 - Very Good, Deserves a Look 6 - Good, Qualified Recommendation 5 - Fair, Solid yet Unremarkable 4 - Some Merit, Requires Improvements 3 - Poor Execution, Potential Unrealized 2 - Very Little Appeal 1 - Not Recommended to Anyone