Yes, there is a straightforward way. You can build it directly by "cd'ing" into the api/python/qb/gui/ directory and then running "python setup.py". Note that it requires wxPython 2.7.2 or above to be installed and preferably python 2.4 or above.
On Linux you will need pyInstaller (version 1.3 is currently used) and should have it in your python path (or edit the setup.py script around line 32 to set it directly).