Now, let's make a second playlist, this time a Smart playlist I'm calling "Donald's iPod," where the Playlist values exclude our "Don't list," as well as podcasts, and any music genres we know we don't like. You can add as many filters as you want by clicking the "+" symbol on the right side of each field.
If your iPod or iPhone can't hold much music, use the "Limit to" function underneath the filter list to generate a finite list of preferred songs that randomize each time you launch iTunes.