If I connect my Pro-7 headset as well as the PR-781 Mic to the back of the K3, how do I select which audio source I want to use with the K3? 73s HK2LS / Larry -- Larry Snyder, RN.ORG, SA "Each and Every Day Thousands of Nurses depend on www.RN.org <http://www.RN.org> for their Nursing CEUs!" Sent via Dell Server/Retiro