When a file is dropped the program takes an audio sample
from the music-file which it send to TRM-server and
generates an audio fingerprint witch it sends back.
This fingerprint is sent along with other info such
duration of the song to MusicBrainz.
If it doesn't find anything more, info is sent to MusicBrainz.
MusicBrainz then sends the correct
information/metadata (such as artist, song and album) back to the QuickNamer program.
The program then saves the information in the mp3 files
(ID3, ID3v2) so that you can view the correct information
using your favorite music player.
Then it renames the files accordingly.
But if that's not enough it also displays some similar artists that you may like, using EchoCloud.

• MusicBrainz Tagger 0.10.5
  The MusicBrainz Tagger application allows you to automatically look up the tracks in your music collection and then write clean metadata tags (ID3 tags or Vorbis comment fields)...

• SoundMaven 0.8
  SoundMaven is a compendium tool for Winamp that gives you access to a wide range of information about the music you are listening to, using MusicIP's DNS file identification technology and MusicBrainz metadata database, as well as a number of well-known Music Web Services