converting windows format to linux format

Hi, i have been asked to convert a windows version of an edited game to a linux version but all of the files do not match up. The game i am trying to convert is here: https://www.dropbox.com/sh/kcghdwj4odwhmmn/AAArber4IioTjsbKZsXFuvvaa?dl=0
Thanks.

Just copy their Themes/default folder to .stepmania-5.0/Themes, then rename it to something else. Then edit the ThemeInfo.ini in it to give it a different display name.
You can do the same for the song they included.