I'm not too sure what's going on. Try playing the files with VLC player, it's a free download & there's a link within this thread: http://www.gnutellaforums.com/tips-t...p3-fixers.html

If VLC won't play the files, maybe they're junk or have some kind of DRM associated with them. Check out the links below. Did you preview the files while you were downloading them? If you Google for the error code, you'll probably find more info.
Windows Media Player Cannot Access the File

Windows Media Player error code c00d11d2 - MSDN Forums

Try going into LW's tools > options > sharing. Click on Add, browse for the folder with the songs that won't play & add it for sharing. Restart LW. When you click on Shared Files in LW's library, do those songs show?

How many songs are there? What format are they & what file sizes?