How to loop an MP3?

Question

How to loop an MP3?

I use this to play an MP3, but it only plays once.

I want to play the MP3 continuously.

/*jslint node: true, vars: true, maxerr: 50, indent: 4 */
(function (console, require, alarm) {
    "use strict";

    var fs = require("fs");
    var lame = require("lame");
    var Speaker = require("speaker");

    function start() {
        var stream = fs.createReadStream("sounds/alarm.mp3");
        stream.pipe(new lame.Decoder()).pipe(new Speaker());
    }

    alarm.start = start;
}(global.console, require, exports));

Using:

• node-lame: https://github.com/TooTallNate/node-lame
• node-speaker: https://github.com/TooTallNate/node-speaker

Boundary

Document what you have researched. Couldn't find anything in node documentation for lame? speaker? etc. – Horary

I am not sure what is the right way to do it. I have tried stream.on("close", function () { start(); });, but that did not work. It started playing several MP3s simultaneously and then stopped. – Boundary

I have tried saving the Decoder and Speaker instances into variables and then modifying the line to stream.pipe(decoder, {end: false}).pipe(speaker, {end: false});. This causes Node to eat all the memory and then crash: "FATAL ERROR: Evacuation Allocation failed - process out of memory". – Boundary

I've upvoted your question but I recommend including your last two comments in it, instead of in comment. – Horary

Answer 1

Wait for the Speaker instance's "finish" event before starting up a new instance.

var speaker = new Speaker();
speaker.on('finish', start);
stream.pipe(new lame.Decoder()).pipe(speaker);

Elliottellipse

I replaced the second line in start with your three lines, but it only plays once. It seems that the "finish" event never fires. I am using node-lame 1.0.2, node-speaker 0.0.10, and Node 0.10.8 on Windows 8. – Boundary