message: removing url flattening
  little used/unnecessary feature
diff: @@ -49,7 +49,6 @@ define(["Tone/core/Tone", "Tone/core/Buffer"], function (Tone) {
  */
  this.baseUrl = options.baseUrl;
  - urls = this._flattenUrls(urls);
  this._loadingCount = 0;
  //add each one
  for (var key in urls){
  @@ -148,30 +147,6 @@ define(["Tone/core/Tone", "Tone/core/Buffer"], function (Tone) {
  return this;
  };
  - /**
  - * Flatten an object into a single depth object.
  - * thanks to https://gist.github.com/penguinboy/762197
  - * @param {Object} ob
  - * @return {Object}
  - * @private
  - */
  - Tone.Buffers.prototype._flattenUrls = function(ob) {
  - var toReturn = {};
  - for (var i in ob) {
  - if (!ob.hasOwnProperty(i)) continue;
  - if (Tone.isObject(ob[i])) {
  - var flatObject = this._flattenUrls(ob[i]);
  - for (var x in flatObject) {
  - if (!flatObject.hasOwnProperty(x)) continue;
  - toReturn[i + "." + x] = flatObject[x];
  - }
  - } else {
  - toReturn[i] = ob[i];
  - }
  - }
  - return toReturn;
  - };
  -
  /**
  * Clean up.
  * @return {Tone.Buffers} this
  