I have a problem with MKPC music

Hi, welcome to the topic, I'm here to tell you about a problem with music of the game: when I play a track in complete mode with custom music, the soundtrack stops after 51 seconds of gameplay.
Another problem is that the music won't accelerate when it should on lap 3.
Why does it happen? Can it be fixed? I need answers to know why does the problem occurs.

You must edit last lap music