you are right Jim no input driver selected for audio. but i don't input audio unless i plug in my usb interface. and i don't have any recording options set on my windows control panel sound.

enabling a source which i don't use in windows control panel recording offers me an input driver. i select it and i get the tuner.

however i can get by with a third party tuner app. so can you advise me if i leave the desktop mic (the device i don't use - its part of my webcam) connected will it affect my recordings in future that i make with the usb interface? i remember in the past i had dreadful feedback problems. the mic doesn't seem to input any signal according to the RB input meter.

and when i record i change the driver to ASIO and select the input and output for my usb interface.

so can i leave the unwanted mic as a recording source in windows without affecting anything in RB and get my tuner back?

advice appreciated and thanks so far