I got skype working on Light.
First, I installed pavucontrol+deps from untested repo.
Next, I downloaded the "dynamic" version from skype.com,
extracted it (as root) to /opt with "tar xvf skype-184.108.40.206.tar.bz2 -C /opt"
Then run "/opt/skype-220.127.116.11/skype" (as user).
Had to fiddle with pavucontrol to find the correct settings, but finally made a successful test call.