Next you need to modify the video source URL in the code by adding &autoplay=1 to the end of the URL as show below:

After you add the autoplay parameter, simply preview and post your latest entry to your MySpace blog.

You can see an example of this in action on the latest post on my own MySpace profile.

The one word of caution I suggest here is that if you frequently post YouTube videos to your MySpace blog and you add the autoplay parameter to all of them, when someone goes to your blog page ALL the videos you set autoplay=1 will start playing at the same time.

You may also want to make your YouTube video repeat.