Make sure to first have SuperBLT, and CustomOST installed. Click the links in the dependency list.

Optional video tutorial for installing SuperBLT, BeardLib, and mod_overrides mods: https://youtu.be/rin_sjSJIkg

1. After downloading the mod, use a program such as 7zip or WinRAR to extract the main folder of the mod.
2. 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).
3. Move the main folder of the mod from step 1 to the folder you navigated to in step 2.

To make the OST work correctly you must have another mod installed that will work as support and the SuperBLT (use the most recent version to avoid problems) and The CustomTrack for the song to work correctly, once the SuperBLT and CustomTrack are installed, You must put the previously named in the folder called "mods" (this must be included when installing BLT completely in Payday 2), with the mod folder (that is, Drive Thru Danger) Attention! when installing CustomTrack there should be two folders (CustomOstMod and Custom Mod Track, the latter is the one that matters for the mod to serve) you put the OST folder in CustomOstTrack and Ready! (I hope it is well explained and you can understand it, I am very sorry if you cannot or if any process is difficult for you and try to let me know if you have any problem)