Every vocabulary item has audio samples with both a male and female speaker.
I’m a big fan of the self-study quiz which has options playing these samples while you perform “out-of-band” reviews.
You might benefit from regularly doing self-study quizzes using the Vocabulary Audio → Meaning and Vocabulary Audio → Reading settings.
If you want to improve your listening comprehension and spoken Japanese, I think it’s incredibly important to hear the readings (in your, uh, “mind’s ear”) as you go through your reviews. The audio recordings let you use your real ears. 
To be clear: you can also play the audio in your actual Wanikani Reviews. It’s under your app settings.