The pronunciation of the word "fountain"

Hi,

In the below exercise, the word fountain is placed under the/I/ sound, but it is pronounced like this /faʊntən/.

www dot bbc dot co dot uk/worldservice/learningenglish/grammar/pron/unit1/dragdrop.shtml

Why is it placed under the /I/ sound?

Thanks a lot.

The second syllable of fountain can be /I/or /ə/ or somewhere between.

Thanks a lot.

I'd always pronounce it with an /I/, never /faʊntən/
(and I'm British, goddammit).

Thanks a lot.