Trying to load more songs onto my Clip

Well, I didn’t have any problems the first time I loaded quite a few songs on to my player.  I tried to load about twenty-something more songs last night the same way I did it the first time, and now I can’t find them on the player.  When I connect the player to the computer and open it through My Computer, I see the songs there.  But they’re not on my playlist on the player itself when I listen to it.

What’s happening here?

BTW, I use Windows XP, drag/drop music through Limewire.

Thanks!

Sorry about the previous two posts, those were unintentional.

=)

what format are the songs?