Tangerine lets you easily create playlists with upbeat music, or playlists for relaxing. [...] it analyzes the songs blazingly fast to the tune of more than 3 per second (on an 1.83 Ghz Core Duo iMac).
After the process of analyzing your iTunes collection is done you can copy the BPM values to iTunes via the menu (File → Save BPM Values to iTunes…). I’ve randomly checked the first of Tangerine’s BPM values using djay‘s manual BPM feature and found the automatically set values only off on some songs by at most 2 BPM. Great!
Be sure to check if any previous BPM values were set for your songs. In my iTunes collection Mogwai’s album “Ten Rapid” had a false BPM of 192 set for every song. I guess it was imported from CDDB while converting the CD to MP3s. I’ve deleted the BPM settings in iTunes and started over using Tangerine.
For the record: I’ve blogged about this because I really love iTunes (this is not the first iTunes related post on my blog) and not because Potion Factory promised a free copy to everybody who blogs about this app as I’ve found out later. I also could’ve reported a bug to get a free copy (and I’m good at finding bugs, it’s almost part of my job).