"En" and "ett" both mean "an" and "a". They are not fixed to specific ones.
English nounds that start with a vowel more commonly have "an" before it, because it's easier to pronounce that way. But there are exceptions.
In Swedisy you don't have the same rules on it. You have to learn them individually, but commonly living beings are "en" words, with some exceptions like for instance child, minister, lion that are "ett" words.
Pronunciation of the "i" sound
Often, the Swedish "i" is pronounced in a very weird (sorry) way, but only by some speakers, and I think, they are more often female than male!
This is quite different from the English "i" (be it short or long).
Is this the so called "Viby i" or "Lidingö i"?