And new sound for castle reminds grunting...
sound effects
Yes, I agree - do NOT like the new soounds at all! I just posted something to this effect before I'd seen this post! I want the old sounds back!

especially if you had sound turned all the way up ...
http://blog.chess.com/webmaster/live-chess-enhancements---2012-01-25
"If you're still hearing the new sounds, you may simply have to refresh the page. We reverted to the old ones while we "retune" some time ago now. :)"

actually I liked the new sounds
(the start of the game sound was a bit harsh , but the rest were good)
we need lighter sounds, the wooden 3d sounds dont suit the 2d computer pieces.

If I were the sound designer I would use these sounds
http://www.freesound.org/people/fonogeno/sounds/17772/
(for all moves, including castle, check, takes)
http://www.freesound.org/people/JustinBW/sounds/80921/
this one for game over and start of game.
these are creative commons sounds check the license on these but they should be ok to use for free.
Free sound effects website: https://efektydzwiekowe.com/
This is a completely trivial post i know but i was just a little surprised when i started a live chess game, listening to music, and i heard a sound like someone losing control of their ar*e hole. It was in fact the new sound effect signaling the start of a new game. Very imaginative.