SknvK
this is because of the way that they designed the intro music in the main menu to stop at a certian point, whats happening here is the game is using the timeline track for the original main menu music however when you put a new audio file into it, it detects the file type that the original music of the game is using. because these audio files are the same the new audio track will still have the normal main menu's music, and because at least i don't think you can program the track to be longer or edit it

I LOVE THE MUSIC, however its cut short half way through