On July 1, Mayor Bloomberg's most delightful legislative measure went into effect, an overhaul of New York City's Noise Code. In addition to welcome regulations limiting construction noise and nightclub decibels, the new law demanded that Mr. Softee trucks must silence their insidious jingle when parked at the curb. During hearings a year and a half earlier, Softee heir James Conway Jr. had scoffed, "The Mister Softee song as a threat to the health and welfare of New Yorkers? I don't think so." Anyone who has tried to work, sleep, or merely survive while that maddening jingle ("Duh-DUH-duh-duh-duh-duh-duh-duh-duh-duh-duh duh-DUH-duuuh-duh") drones in the background can tell Mr. Conway just how very wrong he is. Fans of the tune will be relieved to hear that the trucks can still play it while they cruise; the rest of the public will be happy to know that any truck blaring those notes while stopped at curbside has just earned itself a hefty fine. We're keeping 311 on speed dial.