If you've used the delete function of Lime Wire, then they are gone......forever....or at least until you downlaod them again.
Try to use the search function from the desktop Start>Search>For Files and Folders and type the name of one of the songs or files you think you've deleted......if they show up, then you're lucky, if not.........

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"Never Argue With An Idiot. They Will Drag You Down To Their Level, Then Beat You With Experience"