Download multiple songs from youtube playlist..
npm install
// replace process.nextTick with setImmediate (hot patch)
`cd ./node_modules/express-zip/node_modules/zipstream/; cat zipstream.js | sed s/process.nextTick/setImmediate/g > zipstream.js-tmp; mv zipstream.js-tmp zipstream.js;`
npm start
or see in action: http://youtube-downloader.nodejs.cz/
Enjoy :-)