Like many of you, I don't just produce, but also dj.  In finding new music recently I came across a Drum&Bass remix I really love EXCEPT for the fact that there's a drum machine/bitcrushed snare that has waaaaaaaay too much presence in the mix.  I tried to eq it down in the mix (the harshest tone is right around the 10Khtz) but I run into issues of the mix getting too muffled like it has a Low Pass on it, or the snare is still too much.  I've also tried a sidchained compression to that frequency, but I might not know enough about compression to make it work right.  I also tried automating a duck in that frequency on the snare hits, but that didn't seem to take the snare out enough.  My question is, what have you done to prepare tracks with similar problems for your sets.  Is it ethical to take someone's song and remaster it for your own tastes?