Recently i also downloaded youtube videos from Real player 11..
here i hve it for u to download in attachment...enjoy.

Later on i went into search for it...and got this info


Change the way you experience Web video
The NEW RealPlayer gives you the power to download Internet video instantly

The new RealPlayer gives you the ability to download them all to your personal video playlist. Grab videos from thousands of Web sites with just one click. Watch them whenever you want and wherever you want. You can even burn your greatest hits to DVD*. Find the Web video you want - and Real it in.

* DVD burning feature only available with RealPlayer Plus

Note: The newest RealPlayer is currently available only for windows.
u can also download from the source file.. Click Here