No, there's no easy way to pull that off with this skin.
What you can do is put an audio player in the comment for an image, like this:
The regular text comment<br><audio src="mysong.mp3" controls></audio>
After making the album, you would need to copy mysong.mp3 from wherever you have it, to the output directory of the album, at the same level as the index.html file for the page that includes this image.
What you can't do is set the music to autoplay. Because there are no separate slide pages in this skin, that audio will start playing as soon as you hit the thumbnail page, and will continue, no matter what image you're looking at. In fact, you can end up with the same audio playing over itself, and not in sync! A real mess.