You should also be able to do that from the input tab of the volume applet preferences. If you can't then its known, can't remember the bug number atm, but I believe work is ongoing up strea to make this work better.
You should also be able to do that from the input tab of the volume applet preferences. If you can't then its known, can't remember the bug number atm, but I believe work is ongoing up strea to make this work better.