Adrian posted a couple of links in response to the post with the video about multicultural worship, and I want to highlight one of them that to my ear sounds very Unitarian (at least, it sounds a lot like the music programs at my congregation).
Now, this guy is the pastor of a megachurch with lots of resources (members and financial) at his disposal. This kind of diversity is harder to achieve as the congregation size gets smaller. Does that make it impossible? I don’t think so. The Alban Institute book mentioned earlier takes on the challenge head-on. The first step in achieving more inclusive, more lively worship is the desire to do so.