You can easily choose what music to include in your catalog. To include all music, choose “Include all songs and playlists”.
You can build a catalog that includes only music that you have specified. In iTunes, create playlists or smart playlists that include the music you would like to catalog. In the Playlist preferences, choose “Include songs in certain playlists” and then check the playlists that you would like to include.
On the other hand, you can also make playlists of music that you don't want to catalog. In the Playlist preferences, choose “Exclude songs in certain playlists” and check the playlists that you would like to exclude. For example, you can exclude videos or podcasts from your catalogs. If you uncheck Party Shuffle, it will not be displayed in the sources list.
After changing the playlist preferences, choose File ▶ Refresh to update the catalog with your changes before publishing.