This may not be correct; I give it a Spanish-type pronunciation: Ley-RRRAA-hay. It's ideal to learn the correct pronunciation, but keep in mind that reverence and respect is the most important. With all our different languages and accents, even the correct pronunciation will come out slightly different from person to person. Also, once you have established contact, most Demons will tell you how to say their names if you ask or even, if it's a complicated name, give you an easier or shortened version.
Go to the Runes page, look under basic kabalistic speech on the page about how to pronounce the runes. And while you're there, read the entire website.