When I tried going from the REC OUT to the microphone input on both my Mac and Thinkpad the sound quality was poor. elastic1 - what interface did you go into? Think this may be different than going into the microphone input on the Mac and using Audacity as suggested.
Anyway everything is working fine on mine so I am happy. Not too concered about the updated driver now. Just wanted to try and help out. Not sure if it was worth my time or energy posting on here. I hope there is a fix for everyone soon.