i was referring to the english translation, but i'm really liking this sentence :)
There is "K" in this version of TTS (7-02-2015) "och en" (o-k-en). Is it how native speakers say this words combination?
I would say that it's more likely that a native speaker would pronounce this sentence without the /k/ in casual speech.
If -en is added to words which in english would be a dog, a cat, etc and -ett is added to words which in englich would be an ant, an orange, etc then why in this sentence is it "en myra" and not "ett myra"
No, en or ett is put in front of the word which in English would be a(n), but not in the same rule.
In Swedish, it depends on grammatical gender of the word, not sound of the word as in English.
Read this link, click "show rule" after examples for more descriptions.