>I think it rhymes with "rooster" - although how the it manages that
>with that spelling, I haven't a clue.

It does. Here's what I found on a quick Google jaunt.

http://www.worcestermass.com/pronounce/index.shtml

Ebony the Black Dragon
Senior Editor, Living Room Games
http://www.lrgames.com

(who has more than enough experience on how languages are screwy, thank you very much)