This was my first mod for PD2. I took the time to cut up these songs so they loop and interact nicely. If you're a fan of Metal Gear, I think you'll like this.
Instructions:
Copy entire "Custom Heist Tracks - Metal Gear Solid" folder into PAYDAY 2/Assets/mod_overrides. If "mod_overrides" does not exist, create it. Requires BeardLib to work.
All music clips contained within this mod are used without permission. Metal Gear Solid and its soundtrack are owned by Konami.