Here are some suppliers of wood products.
Simple Man's carries a wide array of wood products and remodelling/building supplies.
Located in Salvisa, off of 127, south of the Bluegrass Parkway.
Paxton supplies a large variety of domestic and exotic hardwoods. They also supply sheet goods.
Woodcraft carries a variety of finished lumber, to include some of the exotics. Prices tend to be high.