Cowon today has quietly launched an Americanized version of the O2, its most recent video-oriented touchscreen player. The device is a close cousin of its Korean original and carries a 4.3-inch, 480x272 display as well as the processing power to decode 720p video in some formats. Although it denies the use of the T-DMB TV tuner that would only work in Korea, the O2 continues to support relativel