OH OH i had a similar issue where i set the music to loop in the inspector but it wouldnt loop once exported! i had to set the music to loop in the import settings to get it to work
I will have to check that out later, because I don't remember seeing anything about a loop in import settings.
it's on the top left ish, next to the scene tab! from there u can adjust some additional settings
Thanks a lot for this info!