During these non-Jewish holidays (if not ALL the time), it would be so smart of the Jewish store owners to play CDs, rather than their radios. There is no secular station that plays strictly non-sectarian music. I listen to talk radio. Much less problematic.
Now it may be that in some stores, there is a wider demographic. Maybe not all the customers are Jewish. Still, mamesh non-Jewish holiday music should not be heard in those places.