How to easily download videos or mp3 or Mp4 from YouTube site ..!

on the basis of 3 easy steps can download everything you want.
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Step 1 = download toolbar 
Step 2 = you want download subject  search            Example :(you tube video or mp3 or Mp4 etc. )
step - 3  One click, your subject downloading now....
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download link : http://www.youtubebyclick.com