You mean while you are playing you would hear music that doesn't fade when you leave a proximity? I think that is possible; I used a script made by MasterLegoDude for the weather in the storm version of San Andreas, and it played a continuous sound for the rain. I don't know if it was playing a .ogg, but it shouldn't be a problem to convert the format to another sound file. The only problem is that you have to activate the script in your add-ons list, so if they forget to check it then they won't hear the sound. But, I'll look into this as soon as I finish my map.
