I'm thinking about playing either a LG or LN dwarf cleric. Is there any way to get Korgan's soundset for this character, or possibly Yeslick's or Kagain's from BGI (I want a 'dwarfy sound' for my protagonist)?

Of course, it's only for download here at SP. Check out http://www.sorcerers.net and search the games subsections to find the soundsets avaible for download.