What is your Windows default audio device?
What is the selected BB audio device?

I believe the Tuner (and a few other older features) use only the windows default device.
BB device is not what it goes to.
Other routing mismatches(Windows Soundmapper for example) may cause a loop or delayed path, or other weirdness, or simply no input.
At least that's how I remember it from years ago.

To use the Tuner reliably your BB/RB audio input device had to match Windows default.. oh, and bitrate mattered.

I do not work here, but the benefits are still awesome
Make your sound your own!