Make sure the extensions are MP3. Go to your Limewire shared folder located in your Doc/Settings folder in Windows XP if you have XP. Then open your shared, Limewire folder all your downloads should be there. What you can do is select, copy and move your Mp3s to another folder on your desktop, label it Music, and then you should be able to burn, do you have the software for burning??? I usually seperate my song files from the shared folder for burning, makes it easier.