Tiggit Controller allows you to control many of the network music services that are available through your Sonos, such as Napster and Pandora. These can be accessed from the Library, by selecting Music Services.
You may need to enter your service credentials (user name and password) the first time you use tiggit controller to access a network service. You can then navigate to the various capabilities, such as radio stations and playlists, as if the service is part of your music library.
Some services provide the ability to provide feedback on the tracks that have been selected. The Thumbs up and down buttons allow you to provide this feedback. You can also create a new "station" using the current artist or track using the other buttons.