For bench testing / monitoring / whatever purposes, can I use on-board audio devices? I see the chan_simpleusb/usbradio can use the parallel port for COR and PTT, I'm wondering if I can also use on-board audio... Assume the on-board device is supported by OSS. Couple use-cases: * bench-test / local monitor -- computer speakers, computer microphone * base-station / dispatch console * audio to a control-RX input on a collocated repeater controller -Matt-