(ELECTRONIC SMORGASBORD) Flea Market's DJs craftily segue from electro to techno to grime to hiphop to breaks to rock. A recent set by FM resident DJ Candlewax started with John Tejada, lit upon Spank Rock and Isolée, then finished with ESG (whew!). Tonight fellow regulars Josh Roberts and Greg Skidmore welcome Jerry Abstract, whose techno and electro sets are magisterial. (Chapel, 1600 Melrose Ave, 447-4180. 9 pm, free, 21+.)