This
is the easiest YouTube batch downloader and Converter. You simply drag
or paste YouTube URL to the text field. The software will download and
convert the videos to MP3, wav, m4a or wmv files instantly You don't
have to use any other download manager,

1-Click YouTube To MP3
Converter uses its own fast download function. You can download videos
as fast as you can imagine. Now this version supports new YouTube
layout. A powerful video search engine is also included. It's freeware
without any limitation. Feel free to use and distribute this one