there's a hackish way of adding a swing rhythm to a song without having to rewrite it all from scratch; it involves messing with the tempo command
constantly though, which unless you have a proper drumline or bassline would be a hassle to make work. in your example song it seems like that wouldn't really be a problem, though, since it has a steady percussion.
it'd look something like this:
Codeno swing: t42 @21c16@21c16@21c16@21c16@29c16@21c16@21c16@21c16
swing: t38 @21c16 t47 @21c16 t38 @21c16 t47 @21c16 t38 @21c16 t47 @29c16 t38 @29c16 t47 @21c16
you can control how much swing it can have this way, but it also means it's harder to nail the proper tempo. and you have to spam the tempo command like i said before.