I think the alsa configuration still applies. They are all called things like asound.rc or .asoundrc.conf. Doing a quick google brings up www.thepenguin.org.uk/alsa/ which seems to discuss a very similar case for software mixing and contains a link to the alsa dmixer page. If you are struggling with using alsamixer to get a list of the controls, then you may find it useful to define a window and use speakup in read window mode. Use speakup-key and f2 for setting the window (eg. on my system in alsamixer I would use the review keys to go to the start of the 5th row and then press speakup-key and f2 and then use the review keys to go to the end of the row and press speakup-key and f2 again, then switch to read window mode. You may find the item row is a different row on your system), now when you use the cursor keys the item will be spoken. From Michael Whapples
