We found this helpful site, Reporters' Committee for Freedom of the Press, thanks to John Stout on the ABA Family Law Section listserve. We tell our clients in KY that phone conversations cannot be taped if the client is not a party to the conversation. The tricky part is conversations between persons in different states. Even if the client is a party, they may be illegal. The rcfp gives a state-by-state guide to what can be done where.