There are many occasions where I want to buy a song which I just heard, but I don’t know the title of that song. Typically, we would ask someone’s help to know the title, but I just found a cool piece of software named Tunatic that can hear a song and then identify the artist’s name and the song’s title. It’s available for both Windows and Mac OS X, and best of all, it’s free!
You’ll need a microphone and an internet connection. Just install and run Tunatic, hum the sound into your microphone and click on the magnifying glass icon. It’ll send the data to their online database and search for a match. If a match is found, it’ll return the title of the song along with a link for more information.
Tip: If you don’t have a microphone, try plugging your sound source to your computer using an inexpensive audio cable. Tunatic will work even better, since no quality loss in involved. To find what’s playing in your own computer, there is an even better option. Some sound cards allow you to select what you hear as input. To do this, simply right-click Tunatic’s window, select "preferences", then click the "Configure…" button. Alternatively, you may even plug your sound output as your sound input.
Looks like Tunatic has been around for a while. I’m not sure, how I missed such great software? I found it on Shankar Ganesh’s blog post entitled Top 10 Free Programs to make the most out of your MP3 Collection.

wrote, on March 11th, 2008
Yeah it does look very interesting. I will take a look. I have not heard about it either.
wrote, on March 12th, 2008
Looks like a very useful app. Although I doubt I will be needing it much, I am anxious to try it out on some songs. Lets see how it goes…
wrote, on March 12th, 2008
This sounds useful. And not just to buy a song. I was over at friends house a few weeks ago, heard some songs, but forgot or didn’t know the titles, and so I had to ask him to email me the list of songs I heard. Now I can just use this.
wrote, on March 12th, 2008
How cool is that.
Only trouble is, how do we get songs out of our heads - plug the mic into our ears?
Nice find though. In all seriousness this has to be worth a look.
wrote, on March 12th, 2008
Cool !!!111 man
wrote, on March 12th, 2008
The problem is sometimes I can just humm.. the melody.
wrote, on March 14th, 2008
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wrote, on March 14th, 2008
It probably won’t work by just humming, as stated in the FAQ. It will be several times more useful if it can even identify a song by listening to our hum. :p