playlist play-error under firefox 14 (Projekktor Core)

playing videos with the playlist under firefox 14 is not working, current chrome has no problems, initiating the env is done by:

$(document).ready(function () {
var myPlayer1 = projekktor('#player_a', {

autoplay: true,
// loop: false,
// continuous: true,
// enableKeyboard: true,
width: 360,
height: 217,
playerFlashMP4: '/delightnet/extensions/MediaDirectPlayer/public/flash/jarisplayer.swf',
playlist: [
{
0:{src: 'link1.ogv', type: 'video/ogv'},
1:{src: 'link1.mp4', type: 'video/mp4'},
config: {
poster: 'http://domain.de/home1.jpg'
}
},
{
0:{src: 'link2.ogv', type: 'video/ogv'},
1:{src: 'link2.mp4', type: 'video/mp4'},
config: {
poster: 'http://eee/images/home2.jpg'
}
}
]
});

// myPlayer1.reset();
// myPlayer1.setPlay();
});

all links are written as http-links, os is windows xp.