Just to reiterate what I told you earlier.

Downld LW & install to your new computer.

If you had successfully used LW at an earlier time, then you should move the entire incomplete folder (with 'all' files within it!) And replace the incomplete folder after installation. But this should be done whilst LW is closed.

As for shared files, well, it doesn't really matter unless you used them in a playlist with WMP. Playlists are simply a file with a list of titles that points the player to the location of the song files. If you later move the location of the songs then the playlist won't work. That's something some people don't realise. So if you have lots of saved playlists, you'd need to set up an identical directory path for them on the new comp.

If you don't have playlists then it doesn't matter where you put your tunes. You can add tunes to share from anywhere. But you'd do that manually. Tools>Options>Sharing & add folder, or LW Library window menu File>Add folder to share.