node-mpg123-util Example var fs = require('fs') , lame = require('lame') , Speaker = require('speaker'); var stream = fs.createReadStream('/path/to/some.mp3') , decoder = new lame.Decoder() , speaker = new Speaker(); decoder.on('format', function() { mpg123Util.setVolume(decoder.mh, 0.5); var vol = mpg123Util.getVolume(decoder.mh); console.log(vol);}); stream.pipe(decoder).pipe(speaker);