Streaming to stdout

gistfile1.js

#!/usr/bin/env node

var Audio = require('./lib/audio'),
  fs = require('fs'),
  argv = require('optimist');

var a = new Audio();
var output = fs.createWriteStream('slow.wav');

var cb = function (err, res) {
  if (err) {
    console.error(err);
  }
  else {
    res.pipe(process.stdout);
  }
}

process.stdin.resume();

a.slowDown({ speed: .5}, process.stdin, cb);
~