If you have run and closed Audacity there will be a file “audacity.cfg” (assuming that Audacity is correctly installed).
It may be in a hidden folder and I don’t use Macs so I don’t know how you will find it - try looking on Google for how to find hidden files and folders on a Mac.
When you have found the file, ensure that Audacity is not running and open the audacity.cfg file in a plain text editor and delete the line “CleanSpeechMode=1”, then save the file.
When you restart Audacity it will restart in normal mode.
Oh yes. I remember the Systems people complaining about that. We’ve been putting off using OS-X Lion for as long as possible. They broke a number of things we use. My machines are Leopard or Snow Leopard.
It’s Go > Go To Folder and then you have to explicitly type in the pathway, right?