There are several bead shops in the Nashville area. The two I shop at most often are BeDazzled and the Beaded Bungalow. Lots of seed beads and lots of other beads in each place. There are other bead stores there, but since I'm two hours from Nashville and generally only there for business which is in the general vicinity of the two shops I mentioned, that's were I go.
Nashville is also on the bead show circuit -- the Intergalactic Bead Show, the Down the Street Bead Show, and the Bead Mercantile Show.
And I understand there are a couple of vendors at the flea market.
Elise