Pianistclare, it is sadly true that the average parish does not have trained or paid musicians, or an organ which someone knows how to play. It is also true that in most parishes, pastors are not musically inclined and do not realize the importance of music in the liturgy.
Speaking from a quarter century of first-hand experience as a parish organist, many, many parish musicians and music directors are strong-willed in their field and bristle at their pastor’s suggestions about music at Mass. You would not believe the resistance that some musicians put up against a pastor who attempts to exercise his rightful authority over liturgical music. Some have even filed lawsuits against parishes or reported parishes for some obscure copyright violation (which one particular music publisher has been known to prosecute with a vengeance). That same publisher is known for siding with musicians against their pastor, and in one case I was involved in, attempted through a series of phone calls to pit the pastor against his music director because the former had cancelled the parish’s subscription to their hymnals.
What is needed is good catechesis to both pastors and musicians about what the Church expects for Mass and other liturgies. If bishops would only create diocesan guidelines based on what the Church teaches, such as how much music is allowed in Lenten Masses, or whether recorded music is indeed forbidden or permitted, it would make parish life much easier. However, except for a tiny handful of dioceses like Marquette, Michigan, no such documents exist.