Autoplay YouTube Videos
To auto play a youtube video on your myspace profile, make sure if you have a music player up then it is turned off, you don't want it to interfere your YouTube video do you?
Go to the YouTube video and near the right-hand side, copy and paste the 'Embed' code to where you want to display the video. A good place to put it would be under the Music or Heroes section.
Now you want to edit the Embed code by adding a little snippet of coding:
&autoplay=1
Add the snippet right next to the URL of the youtube video, this appears twice in the Embed code, so put it next to both URL's. Here is an example of how your coding should be, I've also changed the dimensions of video:
<Z> (this disables unwanted linking on myspace)
<object type="application/x-shockwave-flash"
allowScriptAccess="never" allowNetworking="internal"
height="200" width="220"
data="http://www.youtube.com/v/sIs2gkWMR8I&hl=en&autoplay=1">
<param name="allowScriptAccess" value="never" />
<param name="allowNetworking" value="internal" />
<param name="movie"
value="http://www.youtube.com/v/sIs2gkWMR8I&hl=en&autoplay=1"/>
Save the changes and see if your YouTube video works!