I do not know if Mr. West is the "traditional" Christian, that I can only pray for him to examine himself to know the truth.
What I would suggest, if I read correctly, is for you to go your Pastor and let him know your truths. If you approach him from a spiritual perspective.. He should receive and honor that. IF he wants that music to be played still, OFFER to allow someone else to "take the lead".
You can not compromise to appease the Pastor. He will be in the judgement line behind somebody too.
Do what you need to do and be right with GOD.... don't fear what the feedback, or consequence.
Do not be OFFENDED, by his belief, respect his and STAND..
As Christians, we should STILL be able to coexist, without the threat of being a target, or fired.