Although 96,000 people were registered and expected to attend either part or all of The NAMM Show (as it’s commonly referred to these days), it almost seemed like everyone converged on the Anaheim Convention Center at once Saturday. By 12:30 p.m., the main halls were swarming with people. I saw the Madden Brothers from Good Charlotte posing with a fan on a main floor aisle. Toward the back section, I happened upon the Sennheiser USA booth’s emerging artists stage, where Hot Topic/Alternative Press magazine fave Blameshift did an appealing acoustic set.The Long Island, N.Y.-based rock band, led