Although MediaElement.js is being added to core in 3.6 there are some that will always favor developing or integrating their own flavor, despite the increase of native features as well as newer oEmbeds like Rdio and the like.
I happened across this free touch-friendly audio player and thought it would be good to highlight, just as a point of reference at the very least for those audiophiles among us.
This audio player is responsive that replaces the <audio> element with custom HTML code.
You can add any CSS you want to get an entirely different looking player as you want, although there is no direct way to style the element you can use methods via HTML5 DOM properties, events, and such.
I love having options for bloggers, even if it “competes” against native features. Music is such an invaluable part of my productivity that I couldn’t live without it.
Check out the demo here to see it live.