Thanks for the suggestion Triryche - I did try that before (connecting my L out to the opposite input), but then I get unwanted audio in my microphone mix (WASAPI), such as backing track, etc. In some cases that will work for me but often I just want the isolated instrument + effects that would be provided from an ASIO channel for example.
So in your opinion, the output of Pod Farm is just sent to the stereo mix internally and the L/R outs physically?