iTunes & My Music folder wont link

> In my recent set up for my i Tunes, an error message appeared saying "The
> folder "i Tunes" cannot be found or created, and is required. The default
> location for this folder is inside the "My Music" folder.
>
> I was recommended to install Tweak UI to resolved this problem, I did
> everything according to instructions and found no "My Music" folder in the
> selection option.
>
> I check "My Document" directory and found that the "My Music" Folder is
> present, however, unlike "My Photos" and "My Videos" folder, the "My Music"
> folder has an icon of a folder with the music note missing.
>
> Help!