function processFile(blob, fileName) {
        var reader = new FileReader();
        reader.onload = function (e) {
            var audioCtx = new (window.AudioContext || window.webkitAudioContext)();
            audioCtx.decodeAudioData(e.target.result, function (audioBuffer) {
                var numChannels = audioBuffer.numberOfChannels;
                var sampleRate = audioBuffer.sampleRate;
                var numSamples = audioBuffer.length;
                var dataSize = numSamples * numChannels * 2;
                var buf = new ArrayBuffer(44 + dataSize);
                var view = new DataView(buf);
                var ws = function (off, str) { for (var i = 0; i < str.length; i++) view.setUint8(off + i, str.charCodeAt(i)); };
                ws(0, 'RIFF'); view.setUint32(4, 36 + dataSize, true);
                ws(8, 'WAVE'); ws(12, 'fmt ');
                view.setUint32(16, 16, true); view.setUint16(20, 1, true);
                view.setUint16(22, numChannels, true); view.setUint32(24, sampleRate, true);
                view.setUint32(28, sampleRate * numChannels * 2, true);
                view.setUint16(32, numChannels * 2, true); view.setUint16(34, 16, true);
                ws(36, 'data'); view.setUint32(40, dataSize, true);
                var offset = 44;
                for (var i = 0; i < numSamples; i++) {
                    for (var ch = 0; ch < numChannels; ch++) {
                        var s = audioBuffer.getChannelData(ch)[i];
                        s = Math.max(-1, Math.min(1, s));
                        view.setInt16(offset, s < 0 ? s * 32768 : s * 32767, true);
                        offset += 2;
                    }
                }
                var wavBlob = new Blob([buf], { type: 'audio/wav' });
                add_file_output(URL.createObjectURL(wavBlob), fileName.replace(/\.mp3$/i, '.wav'));
            }, function () {
                alert('Could not decode the MP3 file. Please ensure it is a valid MP3 audio file.');
            });
        };
        reader.readAsArrayBuffer(blob);
    }







var _loadedScripts = {};
function loadScriptPromise(url) {
    if (_loadedScripts[url]) return _loadedScripts[url];
    _loadedScripts[url] = new Promise(function (resolve, reject) {
        var s = document.createElement('script');
        s.src = url;
        s.onload = resolve;
        s.onerror = reject;
        document.head.appendChild(s);
    });
    return _loadedScripts[url];
}

function replaceAll(find, replace, str) {
    return str.replace(new RegExp(find, 'g'), replace);
}

function beautify(str) {


    var result = '';

    var length = str.length;

    var i = 0;

    var braceCountLeft = 0;
    var braceCountRight = 0;

    var withinQuotes = false;

    while (i < length) {

        var c = str[i];

        if (c == '"' && (i == 0 || c[i - 1] != '\\')) {
            // non-escaped quotes
            withinQuotes = !withinQuotes;
        }

        if (!withinQuotes && (c == '}' || c == '{' || c == ',')) {

            console.log('Start####' + result);

            // look back and remove carriage returns and whitespace that are already there

            var resultIndex = result.length - 1;
            while (resultIndex >= 0 && (result[resultIndex] == ' ' || result[resultIndex] == '\r' || result[resultIndex] == '\n' || result[resultIndex] == '\t')) {

                resultIndex = resultIndex - 1;
                result = result.substr(0, resultIndex + 1);

                console.log('char ' + result[resultIndex] + '-----' + result + 'zzz ' + result.length + ' ' + resultIndex);

            }


            if (c == '{') {
                braceCountLeft++;
                result += c + '\r' + GetTabs(braceCountLeft - braceCountRight);
            } else if (c == '}') {
                braceCountRight++;
                // precede with carriage return
                result += '\r' + GetTabs(braceCountLeft - braceCountRight) + c;
            } else if (c == ',') {
                result += c + '\r' + GetTabs(braceCountLeft - braceCountRight);
            }

            var nextChar = '';

            // advance through whitespace and remove carriage returns that are already there
            while (i < length && (str[i + 1] == ' ' || str[i + 1] == '\r' || str[i + 1] == '\n' || str[i + 1] == '\t')) {
                i++;
            }

        } else {

            result += str[i];

        }


        i++;

    }

    return result;

}

function GetTabs(count) {

    var result = '';

    for (var i = 0; i < count; i++) {
        result += '    ';
    }

    return result;

}