MCL - Act 442 of 1976. AN ACT to provide for public access to certain public records of public bodies; to permit certain fees; to prescribe the powers and duties of certain public officers and public bodies; to provide remedies and penalties; and to repeal certain acts and parts of acts.
Can you use recordings as evidence in a Michigan divorce? The real answer is, it depends. In Michigan, as long as one participant in a conversation knows they are being recorded, then the recording doesn't violate any law. If you are in a conversation with your spouse, you can record it.
750.539j Surveillance of or distribution, dissemination, or transmission of recording, photograph, or visual image of individual having reasonable expectation of privacy; prohibited conduct; violation as felony; penalty; exceptions; “surveil” defined.
Michigan is a single-party consent state for the purposes of recording conversations, so that's not illegal as you were a party to the conversation.