What file type are you using, some don't store that info. You may be able to re import them, change the file type and it may able to get the track info online.
i-tunes question
I am building a library and created a few playlists.I have burned a few disks from said playlists. On a couple burned disks I forgot to print out the songs on paper. A friend suggested I just pop the burned disc back into the tray and Itunes will recognize the song titles. Not so. All I get is "track 1, track 2" and so forth. I am looking for ideas as I have deleted the playlists.