Quickly check or uncheck items in your iTunes playlists

iTunes playlist shortcut

A quick shortcut to check and uncheck all items in your playlists

If you have a lot of items in a music playlist and you want to check or uncheck them all, you can save yourself the time and trouble of doing it one-by-one simply by clicking the checkbox of any song in the playlist while holding the Command key down. Doing so will check or uncheck all the items in the playlist at once.