1. One thing you need to be aware of is ... you cannot save a playlist, re-open & edit it & save under the same name. Doing so corrupts the playlist. If you wish to edit/change the details in the playlist, save it under a different name. LW programmers are aware of this problem & will be fixing it up in an upcoming version. Keep an eye out on this page to see when that bug gets fixed:
http://www.limewire.com/english/cont..._history.shtml
2. Playlists won't work if you move the files away from the location they were at the time you created the playlist. A playlist is simply a document with pointers to tell the player where to find the song files. If the files have been moved or deleted then the playlist won't work.