[Elecraft] Getting Logger+ tx audio via K3s USB audio codec

[Barry N1EU]

Would appreciate any tips to getting the N1MM Logger+ soundcard voice
keyer properly keying/driving my K3s via the internal USB soundcard.
My USB-connected K3s is running fine with N1MM Logger+ and "USB Audio
CODEC" selected as my Radio 1 output device.  I've got MIC + LIN On
and I see the wav file properly moving the level meter in Windows
sound and the level is set at 100, but no tx audio on the K3s.  It
appears that everything is working as it should in Logger+.   Is there
a separate LIN level control I need to adjust on the K3s or some other
reason I'm not seeing tx audio being driven?

Thanks & 73,
Barry N1EU