Keep audio playing on mobile lock screen?

[cullenk]

I have audio players that have volume control sliders. To get these to work on a mobile device, they have to be set to HTML5 false. But this then stops them from playing when the user locks their phone. Does anyone know how I could achieve both effects of HTML5 true and false? I read that I could have something set to HTML5 true playing silently in the background so it sets the others be grouped together but I didn't have much luck exploring this option. Thanks!