The Normal diff in this set is currently very difficult (bordering on advanced) because of both spacing and rhythms being used, not to mention 01:49:888 (1,2,3,4,1) - . You should make an Easy difficulty to fix the spread.
Unused files.
"drum-hitclap.wav"
"drum-hitfinish.wav"
"drum-hitfinish2.wav"
"drum-hitwhistle.wav"
"drum-hitwhistle2.wav"
"normal-hitnormal.wav"
"soft-hitclap.wav"
"soft-hitfinish.wav"
"soft-sliderslide.wav"
"soft-slidertick.wav"
You're gonna need to add the '(Cut Ver.)' marker unless there's an official short ver of this song.