Did you try Right clicking a track, or some, or all, and choosing 'Library Tools > Look up track from online data base'? Might work if you have track and artist name, but not sure. I had the same problem exactly. Ended up re-ripping some (don't know if your music is ripped or not), dumping some, and painstakingly filling in tags for songs that I really wanted. Switching from ITunes cost me 400 albums' worth of tags, but I ended up fixing a lot by hand. Try the online lookup, though; it may help. Definitley do not go back to ITunes! What format are you using? I had all WAV files in ITunes, but converted them to ALAC before switching over (I have 36,000 songs [about 1TB compressed] now so I prefer the compressed ALAC format). People will tell you to go with FLAC, but it is not supported by Apple, and ALAC works great for me. Really, JRiver is a million times better!!