Interested in finding a tune on the internet? Try Yahoo's new audio search service, which the company began testing today.

The service, available at, allows users to comb through more than 50m music, voice and other files for free.

All they need to do is punch in words or phrases, say, of a song and are given a list of audio files that they can click on and play.

If a song is for sale by a music site, such as iTunes or Napster, Yahoo Audio will link to a web page where it can be purchased.

The new service will include podcasts, which are recordings made to be played on a computer or a digital device, such as Apple's iPod player.

Yahoo's new service will also point users to news, photos and the websites of artists, as well as information about their work.