You can try new packages here :
http://manupap1.free.fr/maemo/chinook/

Adding ":adev=default" to the v4l2 part of the command line should be enough to enable the sound capture.

There is still a lot of work to do :

I didn't succeed in transcoding the audio, this perhaps only a command line issue, I didn't try all the parameters.

I get a vlc crash with an unexpected "Bus error" with the followingl command :
lokidor