Syntonetic has released an update to its Moodagent music app for the iPhone and iPod touch, adding support for longer playlists and sharing via Twitter and Facebook. Similar in concept to iTunes’ own Genius feature, Moodagent allows users to generate playlists from their device’s music library based on mood as determined by a series of touchscreen sliders for Sensual, Tender, Happy, Angry and Tempo. Users adjust these sliders to automatically create a playlist of music or simply choose a specific song to generate a playlist based on the mood of that song. The Moodagent 2.0 update now allows users to adjust the length of their playlists to include up to 50 songs, lock specific tracks to ensure that they remain in a playlist and specify tracks or artists to be excluded from playlists. The update also provides the ability for users to share any of their playlists via Facebook and Twitter. Moodagent 2.0 is available from the App Store in two different versions: A free, ad-supported version that is fully functional and an ad-free version that sells for $5.