I've done both and they work fine. It's the format that you're changing under more burn options. I believe it's set to WPM and you just reset it to M3u, if I remember right, and hit apply, and it...

I had the same problem. I found that with windows media player open on burn you'll see at the very right 4 dots, click on that and it will give you an option that says more burn options, click that...