http://learnweeblytricks.weebly.com/archive---all-tricks/how-to-add-music-to-your-weebly-site-for-free-o
​Hey Future Weebly Master!

This is what we'll do:

1. Get the file you want to use as background music - save it
2. Go to design (on top)
3. Go to Edit HTML/CSS (bottom left corner) 
4. Go to assets
5. Press the plus icon and upload the file

SAVE EVERYTHING! (top right corner)

Get the link of the file (just copy this and fill it with appropriate names):  
http://"YOURSITE.weebly.com/files/theme/MUSICNAME.mp3 
http://"YOURSITE.weebly.com/files/theme/MUSICNAME.wma
http://"YOUR NAME.weebly.com/files/theme/MUSICNAME.flac
(you can use whichever audio format you want (probably, but mp3 definitely works))

Example of how ti should look like:

http://learnweeblytricks.weebly.com/files/theme/Produce.mp3

OK! Now go to BUILD (up).
Go to the site you want to have you music on
Drag EMBED CODE to your site
Copy this link and paste it into the EMBED CODE space:

<audio src="AUDIOLINK" autoplay loop>
<p>WHATEVER YOU WANT TO TELL THEM IF THEIR BROWSER IS SHEET</p>
</audio>

Example of how it should look like:

<audio src="http://learnweeblytricks.weebly.com/files/theme/Produce.mp3" autoplay>
<p>Your browser does not support the audio element </p>
</audio>

If you want the music to play on repeat just edit the code like this:
<audio src="http://learnweeblytricks.weebly.com/files/theme/Produce.mp3" autoplay loop>
<p>Your browser does not support the audio element </p>
</audio>


That's pretty much it!
With this, I grant you the title of Background Audio Weebly Master!! You're pretty cool I must say ... :D