Remember those new Walkmans we saw recently? Well the folks at Sony have decided to get all fancy and official with them. The electronics-maker is introducing S-, E-, and B-Series PMPs, all featuring MP3 and WMA playback, drag-and-drop file management, and a variety of storage capacities. The 4GB NWZ-S736F and 8GB NWZ-S738F sport Sony's "Open Platform" which allows AAC, Linear PCM, and other codec support, 40 hours of battery life, in-flight noise cancellation, and SensMe -- which creates song shuffles based on user listening habits. The 4GB NWZ-E436F and 8GB NWZ-E438F come in a handful of colors and deliver up to 45 hours of playback, while the low-end 1GB NWZ-B133F and 2GB NWZ-B135F add an FM tuner and voice recording functionality. The players will be available come September, ranging in price from around $45 to $180.