I have a nice microphone attached to a USB sound device, but I'd like to rely on my computer's built-in line out for speakers from the same program (e.g. Audacity, Firefox). It feels like sndio might have some way to let programs use snd/0.play and snd/1.rec, or a way to make snd/1 the default device for record and snd/0 the default for play, or maybe even a virtual sound device, but I haven't been able to sort out how to make it work.
Ideas?