"Uno de mis hijos es un maestro y el otro es un doctor."

[dyna94]

It is just me, or does the slower version seriously mispronounce 'uno'

[SeanPie]

yes...it sounds like "ni"

I have reported it

Same problem a couple of phrases ago as well...also reported

[SheilaDayaNue3va]

the indefinite article is not used with professions

[Iago]

It can be, it just often isn't.

[George249]

Sheila's right, the indefinite article isn't supposed to be there unless the profession is accompanied by an adjective.