Lincoln Mayorga and Sheri Bauer-Mayorga will bring two centuries of American song to life tonight (Thursday) at the GE Theatre at Proctors (7:30 PM, $25, 346-6204). . . . Set the wayback machine for the 1990s, because Staind are headlining a two-night stand in the groovy Vegas-style showroom at the Turner Stone Resort and Casino tonight and tomorrow (Friday, 8 PM, $50-$60, 315-361-7711). . . . Broadway and TV vet Tom Wopat (left)–Annie Get Your Gun and, of course, The Dukes of Hazard—brings his trio to the Van Dyck Lounge on Friday for two sets of diverse American song (7:30 and 9:30 PM, $35, 348-7999). . . . And find the Missing Link on Saturday at Schenectady’s Moon and River Café (7 PM, call for prices, 382-1938).