Or just use Mutify [ https://code.google.com/p/mutify/ ] for Mac. Works very well. There's Blockify [ http://tribe.nu/Blockify.html ] for Windows, but I haven't tried it.

Free version is quite unlistenable these days though. I'm a spoiled Swede though. I started using the service years ago when it was still based on the Spotify employees pirated music collection (with occasional release group names in the metadata).