Sorry for the late response Ema. I'm getting the same thing. Strange. I tried it the normal way and tried skipping the hexedit/benceutility part like with a main menu track, but no luck. I did find this mod however, which accomplished this with a loop. I can't tell if they just made them the exact same length and made their song loop at that point or not. Because if not, I don't know what they did to achieve this. If I have some time tomorrow, I'll look into this further.