无法理解和创建动态JavaScript对象

我希望我的代码能够自我解释,我就快到了,我只是困在如何将可选数据合并到一个具有多个级别的JSON对象中(这就是它吗?)

//get video list - example: video1.flv;test23.flv;Grabledable.flv
var files = j('.videos').html().split(';');
// assume first we have one video, so no need of playlist
var isplaylist = false;
// check if there are actually more than one video
if (files.length > 1) {
    isplaylist = true;
    var playlist = new Array(); // is this right? I want to add this to the video var
    for (var i in files) {
        playlist[] = {
            url: files[i],
            title: 'Video ' + i
        };
    }
};

//here's where the trouble starts
var video = {
    plugins: {
        controls: {
            playlist: isplaylist,
            //i cut out all irrelevant extra data
        }
    }, 
    clip: {

        url: files[0],
        // ONLY DO THIS IF isplayer == false;
        wmode: 'opaque',
        baseUrl: "/video/",
        autoPlay: false
    },

    // from here on this should only occur if isplayer == true;
    // following is the way I want it attached from var playlist
    playlist: [{
        url: 'video1.flv',
        title: 'Video 0'
    },
    {
        url: 'test23.flv',
        title: 'Video 1'
    },
    {
        url: 'Grabledable.flv',
        title: 'Video 2'
    }]
};

我的目标是这里列出的格式: http://flowplayer.org/plugins/javascript/playlist.html 在JavaScript编码部分下。