Human can lie but audio recorder/player cannot lie.

You can use such recorded clip provided there is a mention of it in the initial written statement.   Court will definitely accept such evidence, if the opposite party has any say about its originality, they have powers to get it verified by competent government authority.  So nothing to worry.  If you have failed to mention such in the WS, court wont accept such evidence later on.

Oh no... I did not mention about it in my original divorce petition. But I am going to mention it in my reply to the counter. Can I request judge to examine my evidence based on my reply to counter?

Helping hand WS means witness???

You can try your luck. You mean you have mentioned in the rejoinder.

Also, the audio can be admitted during cross-examination of the Respondent. If it refutes any of her allegations.

yes you can submit the evidence but if it is mentioned in the written statement and the autenticity of that evidence will be tested if the court finds  

Make sure it should be original..If you recored thrue mobile.Preserve mobile.If by other recorder preserve recorde.Don't make CD.CD will not admissible.

Affidavit also required:

https://www.forensicveda.com/Compliance_Of_65A_65B.html