What type of files are you trying to launch(mp3, mpg, avi, ect)? What size are the files? It's possible they're
fake/corrupt. Try the tips in this thread:
http://www.gnutellaforums.com/limewi...ind-music.html
Open LW and go to Tools>Options>Player, and untick to use the LW player and click apply. Using the LW player sometimes causes problems. Try playing your files again, they should launch in your default player for that file type. What happens?
You may just need to d/load some codecs or use another player.
Try using
VLC media player, it has the codecs built in and will play most file types. It's a good player to keep around for those stubborn files that you can't get to play.
For WMP try
K-Litecode Codec Pack CODECs list & alternate players for Videos and Audio