DLO has introduced its new Action Jacket armband for the third-generation iPod shuffle. The new Action Jacket features a fully adjustable, washable armband, and a moisture-resistant, padded neoprene case with a front panel that can be used for cord management, or as a mount for the shuffle, leaving in inner pocket open for items such as keys. DLO’s Action Jacket for the iPod shuffle 3G will be available in Best Buy stores on April 5, through…