You should be able to apt-cache search pulse jack.
Its the jack backend for pulse. Sorry. (Coffee has not kicked in yet:) ) I am not at my computer but I got this information from the officual ubuntu wikis. You can google "ubuntu pulseaudio jack".
This website describes the process here. Scroll down to the pulse audio section: https://help.ubuntu.com/community/UbuntuStudioPreparation
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Rustom Mody wrote:
>On Sun, Oct 16, 2011 at 7:18 PM, Jeremiah Benham > wrote: