Importing limewire songs to itunes help?!?

Ok, so ive had itunes and limewire for a few years now and ive never ever had any problems with any of them. i was always able to just click add file to library or add folder to library and my limewire songs would add without a problem. So like last month my itunes went kind of mad and wouldnt open etc, but it managed to fix itself and i have to restore all of the songs one by one, so i did what i usually did in my limewire and saved the songs that needed to be put back onto my intunes and they successfully went onto itunes. So when i went into my limewire folder there were was no notice of the songs anywhere! then i went onto my doents and there were all of my songs individually in folders! wtf? so i had to put the songs back onto limewire one by one and now theyre off intunes! what the hel? :( and ive tried endlessly to fix this! any ideas?:(