Nigel,

Can hear WMA with BIAB closed already a good start.
Open BIAB. On the top toolbar go to Audio->Audio Drivers / Settings.
See attached image. At that drop down menu try all three choices, one by one. Usually selecting MME solves problems like yours for people.

If not, I have another suggestion, but lets do it one by one.


P.S. We should trade. I help you with setting up BIAB, you will give me a vocal master class smile

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