patch for new feature: acoustic fingerprinting and audio similarity

[Gleb Litvjak]

I am not a part of the Amarok dev team, but here are my 2 cents: this sounds 
great. Actually, I've been looking for something like this for ages. LastFM's 
suggestions are good, but they aren't perfect, as I have many songs from 
little known artists (mostly from Jamendo), which never get suggested. When 
the music collection is rather large, it becomes hard to keep track of every 
single song and its mood (and genre tags don't help too much - for 
example, "Crazy" by Aerosmith and "Kill the King" by Rainbow both have "Hard 
Rock" as the genre, but their mood is completely different). So, acoustic 
fingerprinting would come very handy. It even might become yet 
another "killer feature", proving once again that Amarok is indeed The Best 
Audio Player Ever (TM)

Best Regards,
Gleb