Currently, 432/1076 songs have never been played. My song count should be higher than 1076 - the reason it isn't is because I discovered a popping problem with my last rip and figured out how to fix it, so now I have to re-rip all the affected songs (around 3,000 or so last time I checked were affected, not counting the 5,000-odd I never got around to ripping before I found the pop).