how di i download youtube videos to my computer with th sound and video and...

try http://online.movavi.com/

1)copy the link of the youtube video u want 2 download
2)paste it where it tells you "add url or file"
3)select the conversion type in (this case 3gp)
4)click convert
5)wait until its your turn(it tells u if your next, 4th, etc.)
6)click download

AND THERE U HAVE IT!!!

i found in google, how to download youtube, redtube, dailymotion :
http://www.google.co.id/search?q=inurl%3Ahelpmyinternet.blogspot.com+download+redtube&ie=utf-8&oe=utf-8&aq=t&rls=org.mozilla:en-USfficial&client=firefox-a