How to Convert youtube to Wav and avi free

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How to convert youtube to wav and Avi format free
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• YouTube is one of the foremost popular sites on
  the web for online video content. You'll find an
  enormous array of wonderful and artistic
  user-generated video contents on the location,
  including clips from movies and television shows,
  music, and other content like sports, news,
  gaming, and spotlight. Users always upload and
  share your own videos on YouTube. With the help
  of a third-party app, you can even download
  videos from YouTube and save on your media
  library. However, what if you would like to
  extract the audio portion of the YouTube video
  and save as WAV?

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• Convertmp3 is also convert youtube videos to Wav
  format and downlaod,
• Youtube to avi free converter convert youtube
  content to avi, wav and mp3 formats.
• Thank-You