I have had a real problem with sound on Xubuntu for the last week.
The system says “Welcome to Xubuntu 9.10” in the web page reached with “Applications > Help”, and “Update Manager” says “11.04” is available, so I think this is the system that was originally installed a s 9.10, and upgraded to 10.04 and 10.10.
There was no way for me to get sound out of this system. Many tweaks and such did not help. Windows runs sound fine.
I looked to see if I installed anything recently, and “Synaptic” said I had installed jackd – way back in October. I uninstalled jackd, and now I can output sound. I am able to record from a USB webcam, but Pinyinpro.com won’t use it.
One thing at a time.