Hehe!
-sighs- It was only a matter of time I guess...
You need to add a small line of code to a video embed, normally when you paste across your embed code it will look like this...
<iframe width="560" height="315" src="http://www.youtube.com/embed/2-_g8NZr1tA?rel=0" frameborder="0" allowfullscreen></iframe>
To get the music to play when someone visits your page you need to add the line '&autoplay=1' to the embed code. Like this...
<iframe width="560" height="315" src="http://www.youtube.com/embed/2-_g8NZr1tA?rel=0&autoplay=1" frameborder="0" allowfullscreen></iframe>
To get the music to play more than once you could use &autoplay=10 to get the music to play ten times, there are other commands you can use to start the music at a certain point. #t=0m46s would start playing the track 46 seconds in.
When you are done with your set up you can just shrink the video player down to the size of a pixel so it doesn't add clutter to your page or thread. On my newest build you can just make out the tiny little media player...