No, unfortunately, these "recordings" are automatically generated by a TTS system which is produced by an external vendor. We have no control over it at all. There are much more serious defects that no-one repairs.
You can suggest disabling the audio exercise if it is too hard or even impossible to recognize. I do not think it is the case here.
So I'm not questioning the translation or anything but when I am taking dictation and I put down the wrong vowel I have not "used the wrong word" I have made a typo. It's a little thing but it annoys me very much to be told that "those" is not "those" if the accent on the letter is wrong.
Well, it is a computer that makes the evaluation. Sometimes it evaluates it as a typo, sometimes as a wrong word. Typo only happens when you miss-change one letter. If you swap two letters around, it sees it as two wrong letters and throws a mistake back at you. If you manage to create another existing word, it marks it as an error even if it is just a one letter off. I. e. GOD vs. GOOD