I have been researching this for a long time. And even in this forum, I found out that many people pronounce the mantra ‘AUM’ as “Ooooommmm”. And many pronounce it as “Ahhh-uhhhhhh-mmmm”. Help is appreciated.
I think DarkestKnight pronounces it as “Ooooommmm”. I got it from one of his threads labelled as the 350 day challenge.