Audacity Forum

Thank you all VERY much for the advice.
Your various replies explain it very clearly.
David (Theale)

Hi I want to use a standard dynamic microphone with a stereo mini jack plug to record voice on Audacity on my MacBook OSX running Leopard. I have looked under 'systemn preferences' > 'sound' > input' (third tab along) and looked at the drop-down menu which offers 'internal microphone' or 'line in'. ...