Currently Being ModeratedApr 19, 2013 11:14 AM (in response to lxq30pr)
See this post.
Are your files stored in .wav format? If so there is no tag. If you import such files into a new library iTunes picks up the track name as the song name (inclusing the leading track number) and lumps the tracks togther into an Unknown Artist\Unknown Album folder. If so, restore an older working library then repair the broken links with my FindTracks script.