'Now Aamir comes at nine' is a more natural word order in English though Aamir comes at nine now is okay. 'Nine o'clock' would also be more usual and abbreviated to just 'nine' if you've already mentioned a time
Not only does the person pronouncing अब "ab" have a very thick American accent, she doesn't pronounce the word correctly at all. Why couldn't the lady whose pleasant voice is used for all the other words provide the voice?
Is अब आमिर 9 बजे आता है। incorrect? I usually type out numbers, but now I'm practicing accent so I used dictation which replaced नौ with 9. Do I have to enter ९? Would be very funny if we can use Arabic numerals in English but not in Hindi