Awesome music utilities

OK this might be old hat for some of you but it sure as heck was new to me.

• "Ever thought 'what is this song?' Let Tunatic hear it and you will get the artist's name and the song's title within seconds. Tunatic is the very first song search engine based on sound for your computer. All you need is a microphone and Internet access.
• If your music library has got files with messed up ID3 tags, Musicbrainz will update the tags for you, automatically.