With all the hubbub surrounding Beck’s “secret” backstage show Monday night, there was some concern The Apples in Stereo show upstairs might get overlooked. To some extent it was, but let it be said that anyone who just went home to their couch and tried to stream the Decemberists on NPR through crappy laptop speakers missed out on a hell of a good night. The Archie Bronson Outfit went on first, their post-rock a pretty…