Police are urging music listeners to watch for vandals targeting a popular and expensive pair of headphones. The headphones, styled by rapper Dr. Dre, cost as much as $500 per pair. Authorities say a Bronx man was assaulted and had his headphones stolen, but Brooklyn residents say they are not worried. Police say anyone with information into the Bronx robbery should call Crime Stoppers at 1-800-577-TIPS.