Kmac518, welcome to Gnutella Forums.
Even if I have the "Enable iTunes support" checked (in Preferences/iTunes) - which theoritically will force all downloaded songs to go into iTunes-, sometimes downloaded song does not go in my Limewire playlist of iTunes

I would say than 10% of downloaded songs are in this case.

Half of these songs are in fact in the global iTunes' library but not in the Limewire playlist. So, in this case a search will show them and I can move them to the right playlist

The other half are not present: so, for these, in the lower pane of the LW window (where the current downloads are listed), I double-click on the finished songs which seem no to appear in iTunes; doing this, they are re-imported in the main iTunes' library and I have to move them to the correct playlist.

I never found any solution for this issue: neither on my old G3 10.3.x, neither on my G5 Tiger where the phenomenon still exists.

For me, it is not a important problem, since, on the contrary to some other fellows, double-cliking missing songs (as described above) always put them back in iTunes.

Of course, my explanation are valid for songs that iTunes can handled (mp3, aac, ..); for other codecs (wma, ..), I have no idea: I never download them

Regards
Philippe