King Hehehe
Kingpin of Coinage
This is how I do it. You can hear an official pronunciation from the man himself, so I use that. I used to pronounce it like the word "war" as a kid, though.I say it pretty much like Charles Martinet says it. And it's the Italian way to say Mario, just starts with W....

Thanks!
-rio, or Woh-rio: like the name of the famous cookie but with a W before it and a slight ¨oh¨ sound and the stress on the o.