Every now and then, people ask me for help identifying the title and/or artist of a song. Typically, I search Google using lyrics from the song and look for the song or artist on All Music Guide. Recently, music identification software Tunatic was released to simplify this process. I have yet to try it, but according to user comments on digg.com, it appears to work. Tunatic can be queried by playing music through a computer microphone (or any other audio input) or by playing a digital audio file, like an MP3. It could function as a handy radio companion or to identity mislabeled downloads. It is available for free for Windows 2000/XP or Mac OS X on the product's site.