I found this on taping conversations in Michigan. Sounds like you can tape a conversation between yourself and another, but you need the other persons permission to broadcast it.

Taping a conversation

Mich. Comp. Laws § 750.539c: A private conversation legally cannot be overheard or recorded without the consent of all participants. Illegal eavesdropping can be punished as a felony carrying a jail term of up to two years and a fine of up to $2,000.

In addition, any individual who divulges information he knows, or reasonably should know, was obtained through illegal eavesdropping is guilty of a felony punishable by imprisonment for up to two years and a fine of up to $2,000. Mich. Comp. Laws § 750.539e. Civil liability for actual and punitive damages also are sanctioned. Mich. Comp. Laws § 750.539h.

The eavesdropping statute has been interpreted by one court as applying only to situations in which a third party has intercepted a communication, an interpretation that makes it legal for a participant in a conversation to record that conversation without the permission of other parties. Sullivan v. Gray, 324 N.W.2d 58 (Mich. Ct. App. 1982).

The state supreme court stated in a July 1999 ruling that a participant in a conversation "may not unilaterally nullify other participants' expectations of privacy by secretly broadcasting the conversation" and that the overriding inquiry should be whether the parties "intended and reasonably expected that the conversation was private." Therefore, it is likely that a recording party may not broadcast a recorded conversation without the consent of all parties. Dickerson v. Raphael, 601 N.W.2d 108 (Mich. 1999).

Under the Michigan statute, a parent may not vicariously consent to a recording for a minor child. Williams v. Williams, 603 N.W. 2d 114 (Mich. Ct. App. 1999).