Even Ubuntu’s developers admit they implemented wrong in order to expose bugs in the ALSA system. So if you want the latest PulseAudio in Ubuntu Jaunty, go to System > Administration > Software Sources, second tab, click "Add":
After that, you may want to restart (in my case, some PulseAudio settings didn't work until I restared).
deb http://ppa.launchpad.net/themuso/ppa/ubuntu jaunty main
deb-src http://ppa.launchpad.net/themuso/ppa/ubuntu jaunty mainsudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys B88A1AA8sudo apt-get update && sudo apt-get dist-upgradeAfter that, you may want to restart (in my case, some PulseAudio settings didn't work until I restared).
