After downloading the mod, use a program such as 7zip or WinRAR to extract the main folder of the mod.
Navigate to mods\CustomOSTTracks. The mods folder is supposed to be in your game's installation folder (don't know where that is? click here).
Move the main folder of the mod from step 1 to the folder you navigated to in step 2.
All you need is Custom OST by Nate and the mod to be placed inside it like any other mod that requires it and have superblt as normal though the regular blt might work