No sound settings available in the settings manager window

The release notes for Xubuntu 13.10 include this problem as one of the known issues for that release. (See link to release notes below.)
https://wiki.ubuntu.com/SaucySalamander/ReleaseNotes/Xubuntu

This problem has been fixed in the current development release and a stable release update is currently pending to fix this issue in 13.10

Any prior work-arounds were deemed dangerous to system stability in the Xubuntu team meeting on 2013-12-05. Users were strongly advised from that point forward to not implement them in any manner.

This has now been released to saucy-updates and once a system is updated after install no longer an issue.