Latin

Try to get a recording of the Catholic Mass in Latin. I suspect it might be what you want as the Catholic Church have used Latin since God was a boy, literally.

I just found this thread, so apologies if you've already found an answer to your question. There are 2 fundamental ways of pronouncing Latin - classical and ecclesiastical. The basic difference is that in classical Latin g's and c's are always hard, and v's and j's (or consonantal u's and i's) are pronounced like w and y respectively. And in ecclesiastical Latin it's the opposite, basically. So pronunciation really depends on which type of Latin you're reading. If you want to hear some ecclesiastical Latin, you can listen to Reginald Foster, who is the chief Latinist at the Vatican, reading the sermons of Leo the Great here. I don't have any links for classical Latin being read, but I'm sure there are some around the net.
If you're really interested in the topic, you should check out the book Vox Latina by W. Sidney Allen, which is all about how to pronounce classical Latin.