User blog comment:JD4SURVIVOR/Original Just Dance Wii Japan - ISO/@comment-25582116-20160725132358

I didn't find the first one's iso, but I found Just Dance Wii 2's iso if you want it: http://nicoblog.org/wii-iso/just-dance-2/

Although, I don't know if the page is reliable or not, I just found it :/