Does anyone know where to get character sounds from NPC's in the game that windows can open?
And any idea how to make custom ones?

There is a link from Lady Nightshade's site to a place with loads of files, but I couldn't get any to work.

I found it, and got the NPC set, it's very good.

If you're on the same place I am, try and find the Knave sound set and the Sean Connery sound set 'coz they rock.

I didn't notice the Sean connery sound sets but I'm going looking for them. ( "Sho Sharevok, you exshpent me to talk?"
"That's SAVEROK!"
"That'sh what I shaid, Sharverok.")
(just read the above in a Sean Connery accent and it'll make sense.)