Today’s featured promo on MacUpdate offers Tangerine! for US$14.95 (40% off, retail $24.95). “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.” Tangerine! requires Mac OS X 10.4 or later.