I made an integer variable that i have used so it will not seem like massing of actions.. something i learned from Deuterium. I also created a string variable so i can update that for each of my system updates if it is ever needed to update, and so i dont have to update the title of all the created Leaderboards. (LEADERBOARDS ARE JUST AN EXTRA!) So i made two parts to my system, It is very simple. First part i made is by using the LEFT and RIGHT arrow keys. on the right arrow key press, it goes to the next song and will display the track # on your leaderboard, and on left arrow key press, it goes to the song before the one your at and will display the track # on your leaderboard. My other part is a little different, instead of pressing the right arrow key, you say "-N", and instead of pressing the left arrow key, you say "-B", right now this is my default part that is on. MusicVersion, All12Players and TrackBoard are just things i put in this to help me out with some things

but theyre also for your use. If the track gets to # 8001, it is set to track #1, and if the track gets to #0, it is set to track #8000. SYSTEM DOESNT START TILL FIRST ARROW KEY PRESS IF USING KEY VERSION, IF USING WORD VERSION, DOESNT START TILL ONE OF THE TWO PHRASES ARE SAID TO START THE TRIGGER. Just import your song, rename it if you want, make it a sound in the sound editor by right-clicking it, and click, use as sound. Then go to "setting tracks" (my recommended location) and setting the next track (#) to be the next song you want. You can change the songs that i already have set.
~IF YOU USE~
~PLEASE GIVE CREDITS~