The reason you can't upload WAV files is because NG uses a flash player to play songs, and WAV files sound completely terrible in flash players. WAV files are also GIGANTIC.
But about the song, the drums are placed in really weird locations and it's kind of directionless but the whole thing sounds GREAT for a cinematic track.
Thanks for your response, good to know. Ye WAV is huge, we'd probably have overloaded newgrounds if it were allowed.
When you say, "locations" do you mean in your audio-space or in the meter? The hihats are a bit right-side dominant