A special thanks to Aditya from Institute Teknologi Bandung for his patience.  Without his correspondence, I probably couldn't have created such a comprehensive how to for installing Washtub.  With Aditya being in Indonesia and me being in the US, it sometimes took 12 hours for us to read each other's responses.  What follows here is the meat from our conversation and the main process for getting Washtub installed on Ubuntu. This is also published in the washtub svn repo at:

I am very happy to announce that RPMs for the Liquidsoap streaming server are now available for download.  As far as I know, these are the first packages available for the Fedora system.  These builds are compatible with Fedora Core 11 in both the i586 and x86_64 architectures.  A source RPM is also available for those who wish to rebuild for their architecture or special flavor of Linux.

Today is a good day for several reasons, but mainly because I have released my first open source offering to the world.  Washub, the liquidsoap controller (see first announcement) has been officially adopted by the savonet team.  You can checkout the source via subversion from https://savonet.svn.sourceforge.net/svnroot/savonet/trunk/washtub.