deleting files- PLEASE HELP!!!

[fudge91]

i click and drag all my songs from limewire to itunes and recently i deleted all my songs from limewire library, thinking it might quicken the download speed. what i didnt realise was that deleting the files on limewire meant i couldnt play them on my itunes. this means when i next plug my ipod in to update it will wipe the songs from my ipod

is there anyway i can get the songs back without having to download all the thousands of songs again!!

answers would be hugely appreciated!