I’ve heared a lot of people complain that they can only sync their Playlists to their iPhone or iPod Touch.
Well there’s a simple setting in iTunes that allows you to select the numbers you want to listen to.

1) Connect your iPhone/iPod touch.
2) ? Click on your iPhone/ iPod touch?
3) Go to Summary?
?
» Drag & Drop music/video’s on your iPhone/iPod Touch