they should be refreshed immediately. In every case I've seen when
this doesn't happen it's because ooTunes is pointing to a different
iTunes library than what iTunes is using, which almost always occurs
when you have your music/videos on an external harddrive, which is
sometimes disconnected/not available. In iTunes->preferences-
>advanced make sure that "iTunes Music folder location" matches what
is set in ooTunes under preferences->"Change iTunes library and
Scanned directories"->use this iTunes library.
Let me know if those are different (iTunes just points to the folder,
ooTunes points to the actual file).
Steve