Distorted Audio

Evening Brian,
Strange, when, the other day, you suggested I try converting the file, I automatically went for the ‘best’ one - and that didn’t work. So, just now, I tried converting to the ‘good’ one - the lowest category - and, lo and behold: Perfect! I can’t believe it.
Everything looks and sounds great and I am so happy. Thank you so much for all your help, really appreciate it.
Best,