Actually, don't think you need to care about that. Unless it's highly important for what the name sounds like, it's up to the reader to be interested in how they are pronounced. To give an example that I can pick from the top of my head would be in my favorite western fantasy novel series, where there's different tribes among the were beasts and the hyenas call themself "Bouda", which one character misunderstands as "buddha" once. That gives you a clear hint as to how it was pronounced by the other person, who clearly knew how to do it right. In another book, a protagonist describes how the name of her Sister, Saoirse, is described, but I can't really remember what led up to it. Still remember how to pronounce it to this day though, almost 20 years later. Things like that stick pretty well with me, but I guess that also depends on the person.
Either way, for things important, use that subtle "in story" explanation trick, but don't bother making it a big hype for nothing, because most people don't give a rats ass - and if they do, they will check for themselves.