In your iPod’s Settings app, go to the Music section and turn on Sync Library; on your Mac, open the Music app, then click Music > Preferences and enable it under the General tab. If you don’t ... About the size of a credit card — and just 5.4mm thin — the new iPod nano is the thinnest iPod ever made. The 2.5-inch Multi-Touch display is nearly twice as big as the display on the previous iPod nano, so you can see more of the music, photos, and videos you love. Buttons let you quickly play, pause, change songs, or adjust the volume. How to connect amazon fire stick to onkyo receiver