Seems like you guys need to brace yourselves for script-breaking hell every time you make a major update. 
Yeah 
yep, it’s a script, works when I turn them all off. Working my way through clicking them off and on (I have ~ a dozen haha.)
(edited) K, it’s happening for me when I activate WaniKani Double Check script. The others I have seem to be fine. If anyone else if having trouble, try disabling that one.
I’m not using that one, so it seems to be more than one script affected.
This is happening to me too, I turned off all my scripts and it still happened, it doesn’t matter which voice I choose either
Of note @viet - If you hit ‘J’ to play the audio when the audio button is grayed out because you got the vocabulary reading wrong during review, it will play the last known audio clip from a correct review answer.
e.g.
- I correctly typed ぐあい for the 具合 vocabulary during one review.
- Press ‘J’ to hear the audio and it says ぐあい
- Continue on to the next review.
- 場面 vocabulary shows up for the next review and I type the incorrect answer. The audio button is grayed out at this point,
- Press ‘J’ to hear the audio and it says ぐあい again.
If I were to get 場面 correct, the audio for ばめん will play correctly.
(Using no scripts or anything. Just plain ol’ original WaniKani by itself)
Noted. Will look into this tomorrow!
I am having the same issue.
Awesome, thanks for all the updates and hard work! 
I learned my new three vocabulary lessons, and I tried pressing J, and I heard both Kyoko and Kenichi voices both played all at once. So not only during review session, but also during learn lessons too.
Are you using third party scripts? This issue afaik is fixed on our end , but at least one script is causing this as noted in previous postings.
If that’s WK Double Check script, I don’t use that. If it’s because other scripts I use, Idk. Unfortunately I run out of vocabs to learn (to test them without any scripts) until I guru my kanji lessons.
I turned off TamperMonkey, refreshed the lessons, and still get both voices at the same time on lessons.
Can you tell me your system setup? OS and browser?
Actually. I see where the problem is now. You are hearing double voices doing the intro slides when using the hot key?
Intro slides? .-.
I’m on lessons, and it happens when I click “J” on the Reading tab.
In lessons there are two sections: where you are introduced the new material and then the quizzing portion. The quizzing portion doesn’t have the two voice issue when using the hotkey. But I was just able to replicate the two voice issue when pressing the hotkey during the introduction of the new material. Is this what you are experiencing?
Yep.
On the quiz part, I don’t even get any audio when I click “J”.
(I don’t remember if that’s how it’s always been.
)
(Never mind, I had reactivated TamperMonkey, the quiz part works fine.
)
Which part of the lessons did you experience this? I was able to replicate it happening during introduction of the new subjects. Using the hotkey during the quizzing portion worked as intended.
Ok good. The fix is making its way right now.