Why does Windows XP hide the names of files in folders?

I have a folder that has 6 songs in it. They are all mp3 files. When I view the folder in thumbnails mode, the files are displayed, but all names go away. If I change the view to any other (titles, icons, etc.) the names reappear. This only happens to one folder with in the My Music folder. I have taken all the songs out and put the in the general My Music folder, made a new folder, and then put the songs back in and the same problem happened again. I have also went in and changed the settings so the full file extension shows (ex: pig.gif, game.exe). I have searched Microsoft's site, but it was no help.