Beebee G

How do you prove it is who you say it is?.. Or what if you purposely get that person mad just to try and use it against them. Its not me doing that but it is happening to my husband with his ex.. Is that right? Isn't that considered leading or something? what still boggles my mind is he is not crazy his ex is. She wants him out of his sons life and he has fought for 5 years and still nothing... Can someone help?
We are not the ones recording the conversations, my husband's ex-girlfriend is, and she has not told us that she is recording them but we know she is because she said so to my brother-in-law. I just want to know if she can use those conversations in the courtroom if we didn't know that she was recording.