text: // audio context
  var ChiptuneAudioContext = window['AudioContext'] || window['webkitAudioContext'];
  
  // config
  var ChiptuneJsConfig = function (repeatCount, context)
  {
    this.repeatCount = repeatCount;
    this.context = context;
  }
  
  ChiptuneJsConfig.prototype.constructor = ChiptuneJsConfig;
  
  // player
  var ChiptuneJsPlayer = function (config) {
    this.config = config;
    this.context = config.context || new ChiptuneAudioContext();
    console.log(this.context.sampleRate);
    
    this.currentPlayingNode = null;
    this.handlers = [];
    this.touchLocked = true;
  }
  
  ChiptuneJsPlayer.prototype.constructor = ChiptuneJsPlayer;
  
  // event handlers section
  ChiptuneJsPlayer.prototype.fireEvent = function (eventName, response) {
    var  handlers = this.handlers;
    if (handlers.length) {
      handlers.forEach(function (handler) {
        if (handler.eventName === eventName) {
          handler.handler(response);
        }
      })
    }
  }
  
  ChiptuneJsPlayer.prototype.addHandler = function (eventName, handler) {
    this.handlers.push({eventName: eventName, handler: handler});
  }
  
  ChiptuneJsPlayer.prototype.onEnded = function (handler) {
    this.addHandler('onEnded', handler);
  }
  
  ChiptuneJsPlayer.prototype.onError = function (handler) {
    this.addHandler('onError', handler);
  }
  
  // metadata
  ChiptuneJsPlayer.prototype.duration = function() {
    return libopenmpt._openmpt_module_get_duration_seconds(this.currentPlayingNode.modulePtr);
  }
  
  ChiptuneJsPlayer.prototype.metadata = function() {
    var data = {};
    var keys = Pointer_stringify(libopenmpt._openmpt_module_get_metadata_keys(this.currentPlayingNode.modulePtr)).split(';');
    var keyNameBuffer = 0;
    for (var i = 0; i < keys.length; i++) {
      keyNameBuffer = libopenmpt._malloc(keys[i].length + 1);
      writeAsciiToMemory(keys[i], keyNameBuffer);
      data[keys[i]] = Pointer_stringify(libopenmpt._openmpt_module_get_metadata(this.currentPlayingNode.modulePtr, keyNameBuffer));
      libopenmpt._free(keyNameBuffer);
    }
    return data;
  }
  
  ChiptuneJsPlayer.prototype.module_ctl_set = function(ctl, value) {
    return libopenmpt.ccall('openmpt_module_ctl_set', 'number', ['number', 'string', 'string'], [this.currentPlayingNode.modulePtr, ctl, value]) === 1;
  }
  
  // playing, etc
  ChiptuneJsPlayer.prototype.unlock = function() {
  
    var context = this.context;
    var buffer = context.createBuffer(1, 1, 22050);
    var unlockSource = context.createBufferSource();
  
    unlockSource.buffer = buffer;
    unlockSource.connect(context.destination);
    unlockSource.start(0);
  
    this.touchLocked = false;
  }
  
  ChiptuneJsPlayer.prototype.load = function(input, callback) {
  
    if (this.touchLocked) {
      this.unlock();
    }
  
    var player = this;
  
    if (input instanceof File) {
      var reader = new FileReader();
      reader.onload = function() {
        return callback(reader.result); // no error
      }.bind(this);
      reader.readAsArrayBuffer(input);
    } else {
      var xhr = new XMLHttpRequest();
      xhr.open('GET', input, true);
      xhr.responseType = 'arraybuffer';
      xhr.onload = function(e) {
        if (xhr.status === 200) {
          return callback(xhr.response); // no error
        } else {
          player.fireEvent('onError', {type: 'onxhr'});
        }
      }.bind(this);
      xhr.onerror = function() {
        player.fireEvent('onError', {type: 'onxhr'});
      };
      xhr.onabort = function() {
  		
  		player.fireEvent('onError', {type: 'onxhr'});
      };
      xhr.send();
    }
  }
  
  ChiptuneJsPlayer.prototype.play = function(buffer) {
    this.stop();
    var processNode = this.createLibopenmptNode(buffer, this.config);
    if (processNode == null) {
      return;
    }
  
    // set config options on module
    libopenmpt._openmpt_module_set_repeat_count(processNode.modulePtr, this.config.repeatCount);
    libopenmpt._openmpt_module_set_render_param(processNode.modulePtr, 3, 1);
  
    this.currentPlayingNode = processNode;
    processNode.connect(this.context.destination);
  }
  
  ChiptuneJsPlayer.prototype.stop = function() {
    if (this.currentPlayingNode != null) {
      this.currentPlayingNode.disconnect();
      this.currentPlayingNode.cleanup();
      this.currentPlayingNode = null;
    }
  }
  
  ChiptuneJsPlayer.prototype.togglePause = function() {
  	if (this.currentPlayingNode != null) {
      this.currentPlayingNode.togglePause();
    }
  }
  
  ChiptuneJsPlayer.prototype.createLibopenmptNode = function(buffer, config) {
    // TODO error checking in this whole function
  
    var maxFramesPerChunk = 4096;
    var processNode = this.context.createScriptProcessor(2048, 0, 2);
    processNode.config = config;
    processNode.player = this;
    var byteArray = new Int8Array(buffer);
    var ptrToFile = libopenmpt._malloc(byteArray.byteLength);
    libopenmpt.HEAPU8.set(byteArray, ptrToFile);
    processNode.modulePtr = libopenmpt._openmpt_module_create_from_memory(ptrToFile, byteArray.byteLength, 0, 0, 0);
    processNode.paused = false;
    processNode.leftBufferPtr  = libopenmpt._malloc(4 * maxFramesPerChunk);
    processNode.rightBufferPtr = libopenmpt._malloc(4 * maxFramesPerChunk);
    processNode.cleanup = function() {
      if (this.modulePtr != 0) {
        libopenmpt._openmpt_module_destroy(this.modulePtr);
        this.modulePtr = 0;
      }
      if (this.leftBufferPtr != 0) {
        libopenmpt._free(this.leftBufferPtr);
        this.leftBufferPtr = 0;
      }
      if (this.rightBufferPtr != 0) {
        libopenmpt._free(this.rightBufferPtr);
        this.rightBufferPtr = 0;
      }
    }
    processNode.stop = function() {
      this.disconnect();
      this.cleanup();
    }
    processNode.pause = function() {
      this.paused = true;
    }
    processNode.unpause = function() {
      this.paused = false;
    }
    processNode.togglePause = function() {
      this.paused = !this.paused;
    }
    processNode.onaudioprocess = function(e) {
      var outputL = e.outputBuffer.getChannelData(0);
      var outputR = e.outputBuffer.getChannelData(1);
      var framesToRender = outputL.length;
      if (this.ModulePtr == 0) {
        for (var i = 0; i < framesToRender; ++i) {
          outputL[i] = 0;
          outputR[i] = 0;
        }
        this.disconnect();
        this.cleanup();
        return;
      }
      if (this.paused) {
        for (var i = 0; i < framesToRender; ++i) {
          outputL[i] = 0;
          outputR[i] = 0;
        }
        return;
      }
      var framesRendered = 0;
      var ended = false;
      var error = false;
      while (framesToRender > 0) {
        var framesPerChunk = Math.min(framesToRender, maxFramesPerChunk);
        var actualFramesPerChunk = libopenmpt._openmpt_module_read_float_stereo(this.modulePtr, this.context.sampleRate, framesPerChunk, this.leftBufferPtr, this.rightBufferPtr);
        if (actualFramesPerChunk == 0) {
          ended = true;
          // modulePtr will be 0 on openmpt: error: openmpt_module_read_float_stereo: ERROR: module * not valid or other openmpt error
          error = !this.modulePtr;
        }
        var rawAudioLeft = libopenmpt.HEAPF32.subarray(this.leftBufferPtr / 4, this.leftBufferPtr / 4 + actualFramesPerChunk);
        var rawAudioRight = libopenmpt.HEAPF32.subarray(this.rightBufferPtr / 4, this.rightBufferPtr / 4 + actualFramesPerChunk);
        for (var i = 0; i < actualFramesPerChunk; ++i) {
          outputL[framesRendered + i] = rawAudioLeft[i];
          outputR[framesRendered + i] = rawAudioRight[i];
        }
        for (var i = actualFramesPerChunk; i < framesPerChunk; ++i) {
          outputL[framesRendered + i] = 0;
          outputR[framesRendered + i] = 0;
        }
        framesToRender -= framesPerChunk;
        framesRendered += framesPerChunk;
      }
      if (ended) {
        this.disconnect();
        this.cleanup();
        error ? processNode.player.fireEvent('onError', {type: 'openmpt'}) : processNode.player.fireEvent('onEnded');
      }
    }
    return processNode;
  }
  