Syntonetic is bringing its MoodAgent to Android 2.1 phones, after Nokia smartphones and the iPhone. This application creates mood-based playlists using sliders labeled Sensual, Tender, Happy, Angry and Tempo. Tracks can be locked to ensure that they will always be played in a particular playlist and the number of tracks in each playlist can be set.
And of course, once you've selected your perfect playlists, you can share these over on Facebook and Twitter. Currently, the application is available for free with ads. An ad-free version will be available shortly for $5.