If you opt out of autosyncing your iPod Touch, you now need to go ahead and choose some songs for it. Until you do, the Touch just sits there empty and forlorn in your iTunes window, waiting for you to give it something to play with.
Manual method #1
❶ Click the iPod Touch icon on the left side of the iTunes window. This opens up a world of syncing preferences for getting stuff on your iPod.
❷ Click the Music tab, then turn on the "Sync Music" checkbox.
❸ Click the button next to "Selected playlists" and check off the names of the iTunes playlists you want to copy to your iPod. (Don't have any playlists yet? See Chapter 6.)
❹ Click the Apply button at the bottom of the iTunes window.
Manual method #2
❶ Click the Summary tab and turn on “Manually manage music and videos.” Now you can click the songs, albums, or playlists you want and drag them to the Touch icon in the iTunes Source pane.
Manual method #3
❶ Every item in your iTunes library has a checkmark next to its name when you first import it. Clear that checkmark next to whatever you don't want on the Touch. (If you have a big library, hold down the Control [⌘] key while clicking any title; that performs the nifty trick of removing all checkmarks. Then go check the stuff you do want.)
❷ Click the iPod Touch icon under Devices on the left side of the iTunes window, and then click the Summary tab.
❸ At the bottom of the Summary screen, turn on the checkbox next to "Sync only checked songs and videos" and then click the Sync button.