Yahoo has introduced a new audio search (still in beta) which can help people find music downloads, podcasts, newscasts, speeches and interviews. As competition between Google and Yahoo begins to really heat up, both companies are doing all that they can to add extra functionality into searching, and this new audio search is a great example of such an expansion. The service will be integrated with other Yahoo search categories, such as video, images and news, and will include more than 50 million audio files. Yahoo Audio Search will also let people save their audio searches via Yahoo's My Web 2.0.