Tunatic

"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."

Main Site: http://www.wildbits.com/tunatic/
Download: (Windows)(Macintosh)

Basically, you run Tunatic, put a mic near your speakers, and it identifies the songs that's playing! It's a neat program. It's great for identifying songs on vids and more.

If you think I linked to Keyloggers or etc, feel free to go to their website. Sorry if this was posted before.