hi, um help!! the last like 10 songs i have downloaded, have dissapered somewhere in my computer. they will show after i download them, and then when i shut down limewire and reopen it, they are no longer in the library!!!! But when i go to redownload them it says *would you like to replace the current file?* but there is no file in the library to copy over. . . any help with this would be greatly appreciated.