After seeing Loren's tutorial on one thread, I'd thought would show the world how to change music in Hit & Run.
Firstly, you must have a Meta.ini with CustomFiles enabled as a Required Hack. Then we can begin.
Step one: Covering our rear ends first.
First we must write in our file in CustomFiles.ini to use [PathRedirections] in our file to define the redirection to our custom RMS file in the game.
Then you must use Lucas RCF Explorer to extract the RMS file you wish to edit inside music01.rcf
Then place the RMS file in a structure in CustomFiles folder similar to the RCF file.
CustomFiles\sound\music\level*.rms
Step two: hex editing! (oh boy!)
Now we must use a hex editing tool to open the RMS file you extracted. I would recomend HxD
Now we open your custom RMS file in HxD, and have this list open to find the music you intend to replace. And make a Music Revisions file, it will help you keep track of what you changed.
Now open your custom RMS file in HxD, and use the list to find what track you want to change. Then use the search and replace function and find the value you intend to replace. Then replace it with the hex value that you are replacing with. Viola, it is done.
note: you will need to replace the cues for the song too, like Drama, intro, etc.
Step three: testing, rinse, repeat
Now just fire up your mod and test to see if the changes worked.
Credits: Loren Goodwin: first tutorial
Lucas Cardellini: tools
Hipporeno: Tutorial.
This will need more polishing, expect it!