danigab, I haven't tried to install the XP3 upgrade yet. It may be similar in purpose to the Treo upgrade, which I think was supposed to speed up the initial read of the directory and improve the seek time when moving among tracks. What I really would like to know is if the upgrade will make the XP3 compatible with the new Nusic Explorer interface. The old interface definitely needed a fix or two. (File reordering, etc seem a little clunky.)
Always tell the truth. Then you'll never have to remember what you said the last time.