This is to fix the problem of gracenote not recognizing the artist/album/title with newer cds. If you go to the link a few posts up, it will take you to the infiniti site where there are instructions on how to down load the info. I could not get it to work, meaning the feature on my music box "search missing titles" was grayed out. What it doesnt say is that you have to have that album with missing data playing while you search for missing titles. I thought it would just see all the missing titles on the hard drive.