You can either download codecs for WMP or if you like, try VLC player. It's free & has codecs installed:wink: Check below for a download link, choose the nearest mirror.
Codecs & VLC

Just one thing...with VLC you'll have to open your saved folder to launch, it won't work from within LW. Just go to your LW library, click on Saved Files then click Explore. Once your saved folder's open, launch from there.
Same thing for previewing a download, except that you'll have to click on Incompletes then Explore & preview from within that folder