Audio spanning multiple slides

[faxm0dem]

I'm trying to do a fullscreen slideshow with reveal.js, and I'd like to autoplay an audio file that would span all the subsequent slides.
The way I'm doing the slides is using data-background="img/foo.jpg" as it's the only way I found that actually does real fullscreen.
The downside being that audio files from one slide stop playing when moving to the next.

What would be the easiest way to accomplish this?
I've been thinking about interacting with events, but I didn't find anything in the documentation about interacting with <audio> elements.