From this following links you can directly download any files from youtube to mp3.
What is youtube to mp3 converter?
YouTube conversion software is used to download and convert YouTube videos to all popular formats and portable devices. The obvious advantage is that users do not need an Internet connection or even YouTube to watch videos on the Web.
How to convert YouTube to MP3
Select the video on Youtube or FLV video you want to convert to mp3. Simply copy and paste the URL of the video you want in Mp3 converter. Select the quality of the conversion you want. Keep in mind the high quality conversion may take a little longer than the conversion of standard quality. Once you've done that, click convert and our software will start to convert your youtube to mp3. You can wait until your project is finished or enter your email address and we will send you an email with a link to download your new MP3 as it becomes available. Do not forget to share your new youtube mp3 file with a friend!