Can I use a recording in court?

A lot depends on what you are going to court for, and where. By recordings, do you mean a recording of a conversation, or a recording of a telephone call? Did boyfriend know you were recording? How old is the recording, and what has happened since that time? And, does boyfriend admit his threats in his pleadings or in court (if he does, then as he admits the threats then the recording is not worth much). Sounds like you are in quite the predicament, and I'm guessing that you have not filed anything yet. You really should find an experienced family law attorney to assist you in protecting yourself, and your child. I may be able to assist you.