I had some trouble with it too. All I remember is that Braindump gave me a cxi file. you should go here: https://gbatemp.net/threads/ssb-3ds-i-need-help-unpacking-dt-and-ls.401433/
@Xdqwerty, to answer your question, they're a fusion Brit-pop/J-pop/electronic band with a woman vocalist. Flamingo is hands down their best known song but they've got a ton of other really good songs