At this point -- nearly a year after it was first shown, and delayed from its originally projected release date -- we'll admit to being really confused over Blue Microphones' new Mikey for iPod ($80), the sequel to a high-quality but expensive recording device for earlier iPod models. The pitch with the same-priced 2009 version was that iPod nano and classic users who were really interested in high-quality stereo recording using an external mic could…