AltaVista's audio search was one of the first on the web, and is still good. For each result, the following information is given: file type, duration, mono/sterio sound, some description, and the URL of the page that contains the audio file. AltaVista's audio search uses the same syntax as their web search, so see that page for more information. In additon, there are three field operators for the audio search: genre:, artist:, and song:.