beaTunes

Analyze!
Automatically determine BPM (beats per minute) and key
Look up track metadata using acoustic fingerprints
Import lyrics and determine their language automatically
Categorize songs by their sound color
Compute Replay Gain

Inspect!
Fix your music library (typos, wrong genre, wrong sortname, etc.)
Hunt down and eliminate dupes
Track down orphaned library entries
Manually determine BPM and store the result in iTunes
Assign a mood

Create!
Create matchlists based on sample songs
Sort existing playlists so that matching songs succeed each other
Browse songs from your music collection matching the currently selected song
Get harmonic mixing suggestions for your next DJ set

System Requirements:

Windows
2GHz Intel Core or faster
2GB RAM
Windows XP/Vista/Windows7
QuickTime 7.7 (part of iTunes)

Homepage: http://www.beatunes.com/index.html

Installation Instructions:

- Install program, 
- Use given key and name to register application.
- Done, Enjoy.