Fine Line Tile Gallery has outgrown its digs at 209 W. Illinois St. and is moving across the street October 1 to a space two-and-a-half times bigger. To get ready for the move, they’re holding a rummage sale in their basement: find all sorts of interesting tile (some of which retailed for more than $40 a square foot), all for $10 a foot, cash-and-carry.