用Video.js播放MP3

Question

我已经能够使用Video.js动态加载视频，但我听说Video.js也支持mp3播放。我有这个功能来测试...

openMediaModal: function(type, src) {
        //set up modal
        var modal;
        //if video...
        if (type == 'video') {
            modal =  '<div class="modal-wrapper media '+type+'"><div class="modal">';
            modal += '<video id="modal-player" class="video-js vjs-default-skin vjs-big-play-centered" controls preload="auto" width="640" height="264" poster="http://video-js.zencoder.com/oceans-clip.png">';
            modal += '<source src="'+src+'" type="video/mp4" />';
            modal += '</video>';
            modal += '</div></div>';
        } else if (type == 'audio') {
            modal =  '<audio id="modal-player" controls>';
            modal += '<source src="'+src+'" type="audio/mpeg">';
            modal += '</audio>';
        } else if (type == "flash") {

        }
        //append modal to page
        crc.body.append(modal);
        //init video
        videojs("modal-player", {}, function(){
            // Player (this) is initialized and ready.
        });
    },

视频工作正常，但音频会引发错误。如何加载mp3以动态播放？它似乎没有记录。感谢。