Tags: xubuntu audacity ubuntu jackd pulseaudio sound fix
Xubuntu 8.04 comes shipped with PulseAudio, a new sound management system. For the most part, your commonly used programs should work with this new program. For some, however, Audacity may quit being able to play and record sound. (For those who don’t know, Audacity is a sound editor; which means not being able to play and record sound renders it pretty useless!)
This how-to is extremely easy and short, but it helps me work with one of my favourite programs. In short: uninstall jackd.
1) Go to Xfce Menu > Accessories > Terminal, and enter in the following:
sudo apt-get remove jackd
Reopen up Audacity. Hopefully, it should start working again as it should. If not, you may have to quit the jackd program. Go back to the terminal and enter the following:
Now Audacity should be working just as it did before. Good luck!
(Credit goes to http://ubuntuforums.org/showpost.php?p=4812244&postcount=5.)