The grand reopening.
TL; DR - basically an empty track. It now replaces Freeze (Release Trailer Track), drop into mod_overrides. This time it works properly, I promise.
So, initially, I made this mod for people like me, who are tired of listening to the same looped stuff in the main menu over and over, but at the same time they still want to listen to music in other places (such as heists, planning screen, card drop screen etc.) without having to go to the sound settings every time.
What I did at first was to replace the track "Mayhem Dressed in a Suit" with an empty stream file. Little did I knew, this track consists of more than just one file, so people complained that they still do hear the music after a little while. I was thoroughly confused, because there was nothing wrong on my end. I was too lazy to figure out the problem, and eventually, I abandoned this game altogether.
But now I'm back, and when I remembered about this mod, I decided to finally solve this issue. So, the reason there was nothing on my end is because I replaced a different track for myself, "Criminal Intent" (I don't even remember why I decided to do it this way). The entire track is just one file, so, of course, there was nothing wrong with my personal version of this mod. At first, I decided to just upload this version of the mod, but realized that not everyone might have PD: TH soundtrack bought on Steam, so I decided to replace a track that everyone has.
With a bit of searching, I found out that most of the menu tracks (mainly older ones), including "Mayhem..." consist of two stream files, so I tried "silencing" them both, but there was still a little bit of sound (about 0.5 second long) that I couldn't get rid of. Same thing happened with "Blueprints" and "Let's Go Shopping". Thankfully, I eventually found a track that works nicely with being silenced - "Freeze".
So now you can make builds and wait for people in your lobby in silence, while retaining music anywhere else (unless, maybe, you want to use this track to mute music in other parts of the game, except for heists, of course).