Music is something many folks want to add to their websites. Some folks absolutely hate music on websites, others don't mind it. Used carefully, it can be fine.  Start with the music OFF... but if you don't, be sure to have a button that will allow it to be turned off.

You'll want to use music that you have rights to, so be careful about violating any copyrights.

 A great source for music to embed them on your page is Magnatune. Just go to their page, pick any genre you like and look for an artist or an album. When viewing an album page, you should see a link "embed this album on your own page". Click on it to get the code that you have to embed into your site. Make sure that you select to have the music off by default so that your visitor can choose to turn it on if he wants to.

Here's a sample of the small player embedded into a gallery description.

You can also host your music on another site (even a free site, like Google Pages) and then play it on your SmugMug site. Here is some example code.

<embed src="http://www.yourstorageplace.com/yourmusicfile.mp3" width="70" height="18" autostart="false" loop="true">

IMPORTANT!  If you put your music in your footer section, be SURE to wrap it in a div.  Like this:

<div id ="my_music"> <embed src="http://www.yourstorageplace.com/yourmusicfile.mp3" width="70" height="18" autostart="false" loop="true"> </div>

And then use THIS CSS in your CSS Box to make it work only on your homepage, or a gallery page.

#my_music {display: none;}
.homepage #my_music {display: block;}

or
.gallery_XXXXXX #my_music {dispaly: block;}

If you want to discuss music on your website, make a post on Dgrin's Customizing Forum.

References

Notes: remember, you must have the right to use the music on your website, so be careful.