I've had quite a few people ask me how I embed YouTube videos on my page that autoplay to provide music so I don't have to upload mp3s. Due to this, I'm going to type out a little tutorial that will hopefully provide assistance for those who don't know.

I'm gonna use this video for example:

http://www.youtube.com/watch?v=yT4p6dEa9Yo

On the YouTube page, click Share, then Embed. Copy the large amount of text that *should* already be highlighted within the box that appears.

<iframe width="420" height="315" src="http://www.youtube.com/embed/yT4p6dEa9Yo?rel=0" frameborder="0" allowfullscreen></iframe>

Now, look at the video's URL within in the code:

<iframe width="420" height="315" src="http://www.youtube.com/embed/yT4p6dEa9Yo?rel=0" frameborder="0" allowfullscreen></iframe>

Only one thing needs to be changed to make this autoplay.

rel=0 needs to become autoplay=1

So, 

<iframe width="420" height="315" src="http://www.youtube.com/embed/yT4p6dEa9Yo?autoplay=1" frameborder="0" allowfullscreen></iframe>

Now, you can copy/paste this code into your main profile itself or into the text box via the video option. You can even do this in a comment, if you choose. 

I hope this helps! Any more questions, just ask.