Source: Wired News ________ Everyone knows the MP3 format is used by more devices and people than any other file-based digital-audio format. Most also know that record labels prefer DRMed alternatives such as the ones sold by Apple's iTunes, because they make it harder for people to share music. But wait -- was that a pig flying past my window just now? Evidence is mounting that major labels may start to prefer the MP3 format, as impossible as that used to seem. Here are seven reasons why MP3 is the future of the music industry.