overcast.fm.js

document.addEventListener('keydown', function(ev) {
    var audio = document.getElementById('audioplayer')
      , okayKeys = [32, 37, 39]
        ;

    if (okayKeys.indexOf(ev.keyCode) > -1) {
        ev.preventDefault();
    }

    // space (pause)
    if (ev.keyCode === 32) {
        audio.paused ? audio.play() : audio.pause();
    }

    // left arrow (back)
    else if (ev.keyCode === 37) {
        audio.currentTime -= parseInt(document.querySelector('#seekbackbutton').getAttribute('data-seek-back-interval'));
    }

    // right arrow (fwd)
    else if (ev.keyCode === 39) {
        audio.currentTime += parseInt(document.querySelector('#seekforwardbutton').getAttribute('data-seek-forward-interval'));
    }
});