Roughly the size of two sixth-generation iPod nanos stacked next to each other, Apple's seventh-generation iPod nano ($149/16GB) is an attempt to recapture some of the magic lost in the prior transition to a wearable model. Now equipped with a 2.5" touchscreen with a nearly 16:9 aspect ratio, the new iPod nano restores the earlier models' ability to play videos and actually display usefully rendered videos, while preserving the Music, FM radio,…
