They also have a HUGE file that has the voice sets for all the NPCs in the game. So if you like Quayle's voice set but not Quayle, you're set. Also do a Google search for "Baldur's Gate character sound sets." I found one guy's page, which was great. He'd made the COOLEST sound set for a Dwarf, but my favorite is the one he suggested would work well for an alcoholic bard.
(Do a Google search for "alcholic Bard," too.....I'll bet those words aren't used in combination very often.)