audio quality gets worse when playing song after song after song...

[moolen]

Hey folks.
Great Library you're working on!

When i play one song after another (...and so on) the quality gets worse.
It could be a desync between the L and R channel or something else.

it doesnt matter if i use the node-speaker or aplay player. so it looks like its the audio stream from spotify.

the code:
sidenote: i added Player.isPlaying attribute. this is just the spotify.js file. it wont run.

module.exports = function()
{

    var libspotify = require('libspotify');
    var config = require('../config.json');
    var Speaker = require('speaker');
    var audioOptions = {channels: 2, bitDepth: 16, sampleRate: 44100};
    var self = this;
    this.currentList = null;
    this.maxTrackCount = config.maxTrackCount || 12;

    this.search = function(data, callback)
    {
        console.log('spotify search');
        if(!self.session)
        {
            self.createSession();
        }
        var search = new libspotify.Search(data);
        search.trackCount = self.maxTrackCount;
        search.execute();
        search.once('ready', function() {
            if(!search.tracks.length) {
                console.error('there is no track to play :[');
                callback({error: 'there is no track to play :['});
            }
            else
            {
                self.currentList = search.tracks;
                callback(search.tracks);
                //console.log(search.tracks);
            }
        });
    };

    this.startPlayer = function(data, callback)
    {
        if( self.player && self.player.isPlaying )
        {
            self.player.stop();
        }
        if(self.session)
        {
            var track = self.currentList[data];
            self.player = self.session.getPlayer();
            self.player.load(track);
            self.player.play();
            self.player.pipe(new Speaker( audioOptions ));

            console.error('playing track. end in %s', track.humanDuration);

            self.player.once('track-end', function() {
                console.error('track ended');
                if(typeof callback === "function")
                {
                    callback();
                }
                self.player.stop();
                session.close();
            });
        }
        else
        {
            return false;
        }
    };

    this.stopPlayer = function()
    {
        console.log('stop Player');
        if(self.player)
        {
            self.player.stop();
        }

    };

    this.createSession = function()
    {
        console.log('spotify create Session');
        self.session = new libspotify.Session({
            applicationKey: __dirname + '/../spotify_appkey.key'
        });
        self.session.login(config.credentials.login, config.credentials.password);
        return self;
    };

    return {
        search: search,
        stopPlayer : stopPlayer,
        startPlayer : startPlayer
    };
};