I can't get the internal mic working at all, but I can get the external mic working - it took a while and even longer to fix the horrific distortion. However it now works fine so hopefully this will help other people:
* set Digital Input Source (on playback screen!) to Analog Inputs (not Digital Input 1 as most people do)
* capture the "Capture" device (not "Capture 1" device)
* set "Digital" device sound to about two-thirds - any higher and it distorts badly
* set "Capture" device to zero (if you set it higher you also get distortion)
I can't get the internal mic working at all, but I can get the external mic working - it took a while and even longer to fix the horrific distortion. However it now works fine so hopefully this will help other people:
* set Digital Input Source (on playback screen!) to Analog Inputs (not Digital Input 1 as most people do)
* capture the "Capture" device (not "Capture 1" device)
* set "Digital" device sound to about two-thirds - any higher and it distorts badly
* set "Capture" device to zero (if you set it higher you also get distortion)