Karelia’s first update to Tangerine! (http://tinyurl.com/q986mgr) since acquiring Potion factory is available. Tangerine! lets you create the “perfect playlist” from your iTunes library.
The app analyzes the Beats Per Minute (BPM) and the beat intensity of your music, and applies the range you set to the pattern you choose. Version 1.4.2 sports some improved localizations and fixes some bugs.
Tangerine! is available at the Karelia website or the Mac App Store. It costs US$24.99