I noticed the noise too. I'm pretty sure it is the result of low bitrate audio.
I encoded a higher quality version straight from my .flac for you if you want to use it:
I changed all of the timing points for the new mp3 if you do decide to use it. You will need to manually resnap the last note of each diff though
New timing pointsNormal
1592,468.75,4,2,0,45,1,0
16357,-100,4,2,0,30,0,0
27139,-100,4,2,0,50,0,0
31592,-100,4,2,0,50,0,1
42373,-100,4,2,0,15,0,0
61123,-100,4,2,0,50,0,0
77060,-100,4,2,0,50,0,1
104013,-100,4,2,0,15,0,0
120186,-100,4,2,0,50,0,0
167060,-100,4,2,0,50,0,1
209013,-100,4,2,0,15,0,0
211709,1764.70588235294,4,2,0,10,1,0
Hard
1592,468.75,4,2,0,45,1,0
1592,-100,4,2,0,15,0,0
12842,-100,4,2,0,30,0,0
27139,-100,4,2,0,50,0,0
31592,-100,4,2,0,50,0,1
42607,-100,4,2,0,15,0,0
61592,-100,4,2,0,50,0,0
74717,-70.4225352112676,4,2,0,43,0,0
76592,-100,4,2,0,60,0,0
77060,-100,4,2,0,60,0,1
100498,-100,4,2,0,60,0,0
164717,-89.2857142857143,4,2,0,43,0,0
167060,-100,4,2,0,60,0,1
209717,-100,4,2,0,5,0,0
211709,1764.70588235294,4,2,0,10,1,0
Insane
1592,468.75,4,2,0,45,1,0
31592,-100,4,2,0,60,0,1
44482,-200,4,2,0,60,0,0
61123,-100,4,2,0,60,0,0
74717,-83.3333333333333,4,2,0,60,0,0
76592,-200,4,2,0,60,0,0
77060,-100,4,2,0,60,0,1
100498,-100,4,2,0,60,0,1
106592,-100,4,2,0,60,0,0
135185,-83.3333333333333,4,2,0,60,0,0
135654,-71.4285714285714,4,2,0,60,0,0
136123,-62.5,4,2,0,60,0,0
136592,-100,4,2,0,60,0,0
167060,-100,4,2,0,60,0,1
211592,-100,4,2,0,35,0,0
211709,1764.70588235294,4,2,0,10,1,0
the timing changes also fix the kiai snapping issue that ai mod shows in the insane diff here:
Other than that, I couldn't spot any issues. (probably because I'm pretty new at modding)