For the latest Debian packages, see https://packages.debian.org/src:aubio.
For the latest Ubuntu packages, see http://packages.ubuntu.com/src:aubio.
For the latest version of the packages, see https://anonscm.debian.org/cgit/collab-maint/aubio.git/. Use git-buildpackage to build from the git repository. For instance:
$ git clone git://anonscm.debian.org/collab-maint/aubio.git
$ cd aubio
$ git buildpackage