Unlike standard ISO files (which are raw 1:1 copies of a disc), a WBFS file compresses the game data and removes unnecessary padding. For Just Dance 2015 , this is crucial.
You will need a clean dump of Just Dance 2015 . You can create this yourself if you own the original disc using a tool like on your Wii, or a PC DVD drive capable of reading Wii discs. Legally, you should only download WBFS files for games you physically own. Just Dance 2015 Wii Wbfs