I agree that it would be worthwhile to have some sort of Catholic music programming. I’m not sure how that would play out practically, however. Obviously, you are getting into a matter of cost with royalities and all - even if you go pretty bare bones and take away the salaries of live hosting in favor of a more automated system.
But, then, one must ask, “What will be so unique about a ‘Catholic’ music station?” Is there enough “Catholic” music out there to even support a playlist? Would all of the music necessarily be Catholic or by Catholic artists? Would it also incorporate much of the Christian music which could be heard elsewhere? Would there be any songs or Christian artists excluded due to their message or stance on Catholicism? Who would listen? Could you build up enough audience to support the format? How would it be effectively financed? It would become a challenging leap to take, then.
I do think that there is at least some room for incorporating more music into the overall format of a Catholic station, however. Maybe mix in some songs as part of a morning show. Perhaps offer an extended daily music program for a couple to a few hours nightly. What about a regular “Soundstage” type show which could be done before a live audience? Baby steps are possible if one is creative and dedicated (and can find financing).