Tangerine! lets you easily create playlists of upbeat music, or playlists for relaxing. It works by analyzing the BPM and the beat intensity of your music. Spend your time listening to music, not making playlists.
Whats New
Version 1.4:

* Version update to match the Mac App Store version
* Bug fixes and user interface improvements

Serial number only works with the cracked Tangerine! in this torrent.
Courtesy of galgitzizu

Link for more information: http://"http://www.potionfactory.com/tangerine/"