In order to use the arranged soundtrack for the game, you have to open up the def file for the stages and find this:

bgmusic = sound/[stage]nw.mp3; sound/[stage]nwarranged.mp3

Remove the first mp3 and the ; so it looks like this:

bgmusic = sound/[stage]nwarranged.mp3

After that there is also going to be the sound loop you have to fix right below that. I've included loop points for both versions of the soundtrack, but only tested the original. If any of the arranged mp3s don't loop properly let me know.

Example:
;Original loop
bgmloopstart = 700800
bgmloopend = 4190400

;Arranged loop
;bgmloopstart = 691200
;bgmloopend = 4104000

Just put colons in front of the original loop ones and remove the colons from the arranged loop.

These stages are made for Mugen 1.0. They are untested for 1.1, and they probably will include a glitch where characters don't have shadows in Mugen 1.1. To fix this, open up the def and find this:

[Shadow]
 ;This controls the darkness of the shadow. Valid values range
 ;from 0 (lightest) to 256 (darkest). Defaults to 128 if omitted.
intensity = 0

and change it to

[Shadow]
 ;This controls the darkness of the shadow. Valid values range
 ;from 0 (lightest) to 256 (darkest). Defaults to 128 if omitted.
intensity = 128

For some reason Elecbyte removed the option to make colored shadows in 1.1, despite several games having them(SFA3 for example). One of the side effects of that is this, sorry!

The cars that go by is randomly chosen at the start of the round and each time the car finishes a cycle.
0 - Red car
1 - Pick-up
2 - Truck-kun
3 - Blue car
It starts at a position of 0 and holds that for a single frame, then is assigned a random velocity between 5-12 with seemingly having a bias against the number 7 since it's rare. Which vehicle it chooses also doesn't seem to effect the speed, any vehicle can be any speed.

The vehicle travels from position 0 to position 2148 on the first cycle, and then any value higher than that it resets to position 3 and holds for a frame. This is where it's given a new random car type and velocity. Repeat forever. This is the biggest reason it's taken me so long to finish these. I finally just gave in and let the game run for 9000 frames and used what I got as "random values". IKEMEN would make this incredibly easy and also give true random values, I might actually do an IKEMEN port of specifically this stage.

Bridge


Train Hangar


Harbor


Clock Tower


Green House


Ancient Ring


Plant


Boss Stage