Comment 27 for bug 273693

I have Intrepid amd64 up-to-date and Skype form Medibuntu.
Alsa-base 1.0.17.dfsg-2ubuntu1. There is no alsa-lib package in the repositories.
Skype runs but no sound.

# ldconfig
# ldconfig -v | grep alsa
/usr/lib32/alsa-lib:
/usr/lib/alsa-lib:
 libalsatoss.so.0 -> libalsatoss.so.0.0.0

1) Changed "Default device" to "pulse", in Skype options: it has sound but no capture

2) Dimitry's workaround 1: everything's right on Skype, but if there's a call in progress, no other application can take control of the sound sink, or mix the sound. Or vice-versa, if other application is playing a sound, Skype can't use the sound sink.

3) Dimitry's workaround 2 (with its variants: alsa*.conf): sound but no capture. Here's the output of ldconfig:
    # ldconfig
    # ldconfig -v | grep alsa
    /sbin/ldconfig.real: Ruta '/usr/lib32/alsa-lib' establecida más de una vez
    /sbin/ldconfig.real: Ruta '/usr/lib/alsa-lib' establecida más de una vez
    /usr/lib/alsa-lib:
    /usr/lib32/alsa-lib:
     libalsatoss.so.0 -> libalsatoss.so.0.0.0
    (I have the spanish version. It says something like: /sbin/ldconfig.Real: Path xxx is set more tan once)

Hope this is helpfull for you.