I'm here to help you with setting up your multimedia video! ^.^
First, you must go to YouTube.com, or some other video provider(With urls of the videos){URL's are the web link adresses usually the "http://" or the "www." EXAMPLE: *http://www.GAIAonline.com*}.
Like I said, you must go to YouTube, or some other provider to get the URL of the video.
Like so in this picture.
To get th URL

Then, from there.
You go to tektek.org.
And go to the "Profile Themes / Video" section.
From there, you go to "Profile video"
As shown in this example:

Then, press.

It'll then come up to a new URL codeing, shown here.

After that, you copy the new code, and go on GAIA, and go to My GAIA> Account> Multimedia.
And paste the code in the Mulitimedia codeing box, as shown here.

Remember to submit, and save.
And, you'll have a video on your profile.
^_^.