Help with music in sectors

Hello, I have a short question. I've placed a tile script on a whole sector that plays a mp3 (which I renamed to an already existing arcanum music mp3 and just changed the path in schemelist.mes) and that works just fine. But the problem is I want the mp3 to play when inside the boundaries of a town, and placing the same script on the different sectors that include the town works fine but at a cost: when you cross into another sector the mp3 starts looping at the beginning therefore interupting the "mood". Does anyone know how to just make the mp3 just keep on playing when loading the script for the new sector without starting over?
I've looked through the original Arcanum scripts but don't seem to find any tied to a certain city or town. How did they do it?
I would appreciate if anybody could help me out with this since it's starting to get on my nerves .

Thanks

/D