The player assigns FIDs to tracks that were ripped and are now waiting for the background process to get around to encoding them.

If they've been ripped but not encoded, that means they're WAVs and can be played and jemploded just like any other tune. "Pending" means the FID has been allocated, but not yet used: the most common cause of this is when you start ripping a track from CD but ripping is interrupted -- perhaps by an unreadable-CD error, or by the user cancelling the operation. If you are sure no ripping is going on then it is safe to delete pending FIDs -- they would go away when the database was rebuilt anyway. Or you could just ignore them.

Peter