Unauthenticated Radio
Unauthenticated Radio is a way of streaming Last.fm radio station without the need for a login process, just as if you went to Last.fm without being signed in and listened to the radio through web player. This is not based off the new 2.0 web services and is not officially supported by Last.fm.
Process
The process of setting up the radio session is a combonation of the radio package and the playlist.fetch method.
1. Get a session key by calling radio.getUnauthenticatedSession
2. Adjust the radio station using radio.adjust. See radio.adjust for valid stations
3. Get the station playlist with playlist.fetch. The playlistURL parameter should be in the format:
lastfm://playlist/radio/$sessionKey
where $sessionKey is the key obtained from step 1. To update the playlist, call playlist.fetch again with the same playlistURL