I'm using pavucontrol to make changes in the "Recording". I'm changing the source (??) of a Loopback to Null-Output from "Internes Audio Analog Stereo" to "Monitor of Internes Audio Analog Stereo" see the screenshot http://picpaste.de/Bildschirmfoto_vom_2013-10-26_11_32_03-z0KwnFDE.png I'm now looking for a possibility to do this via command line.

So far I've done the following:

pactl load-module module-null-sink

? creates a new sink

pactl load-module module-loopback

? creates a new sink input

pactl load-module module-loopback

? creates another sink input

pacmd move-sink-input 0 1

? changes the sink of the sink-input (to Null-Output); this is like changing manually in the pacucontrol tab "Playback".

It's just the last part (making the change like shown in the screenshot) via command line that I'm not able to do.

I'd be very happy for any advice or suggestions. Thanks already!