'C' is hard like a modern K. 'Y' is like a U with an umlaut. 'NE' is 'Na'. With A as in 'about' or 'soda'. 'GA' I think the G here is silent, although I'm not 100% certain.Go to http://www.kami.demon.co.uk/gesithas/readings/brun_oe.html, download the first poetry sample and listen out for the word Brunanburh. It will give you a basic idea of how 'burh' names sounded in their original Old English context.Personally, I prefer the more common spelling and pronunciation CYNEBURH. It just sounds nicer without the additional 'a' sound at the end.