D’Accord Music Software has announced a new program, iChords, that recognizes and presents chords from any MP3, WMA files or CDs. iChords identifies chords from any audio source, making it easier to transcribe music or just get the harmonic changes for tracks you want to play.
iChords offers additional features beyond chord transcription:

iChord displays the chord [...]

Innovative Music Systems, Inc. has announced the release of version 6.1 of its patented intelliScore music recognition software that listens to prerecorded polyphonic music (in WAV, MP3, or CD format) and creates a MIDI file containing the notes played, likely chord names, and overall key. The MIDI file, in turn, is suitable for notation, cleanup/editing, [...]