Islam can not let the constitution stand, the religion has its own government requirements. It is a government religion. You allow islam to become part of American culture and not fight it at every turn it will destroy this country like it has any country it has gotten hold of. So, if you value the constitution you would fight the normalization of islam in this country.
The station has the right to play this call to prayer. They people have a constitutional right to complain and then boycott this station.
BTW if you had not noticed the left is involved in the same type of attack on Christianity, Christmas and Easter being part of American society, their constitutional right. The difference: your constitutional freedoms were derived from freedoms the founding fathers found in the Bible thus Christianity. That is what the left and libertarians don't get loose Christianity that bound behavior to a certian moral code you loose those freedoms and get anarchy. Allow islam to derive a moral code you get slavery.