Can't istall entertainer

I cannot install it.
I have follow all of the steps in the wiki page, for installtion (from tarball), and this is what I get,...

This was first time...

Traceback (most recent call last):
  File "setup.py", line 15, in <module>
    translations_generator.update_mos()
  File "/home/user/Desktop/entertainer-0.4.2/tools/translations_generator.py", line 116, in update_mos
    call(['msgfmt', po, '-o', mo_out])
  File "/usr/lib/python2.6/subprocess.py", line 470, in call
    return Popen(*popenargs, **kwargs).wait()
  File "/usr/lib/python2.6/subprocess.py", line 621, in __init__
    errread, errwrite)
  File "/usr/lib/python2.6/subprocess.py", line 1126, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory

>>>

This was second time

Traceback (most recent call last):
  File "setup.py", line 15, in <module>
    translations_generator.update_mos()
  File "/home/user/Desktop/entertainer-0.4.2/tools/translations_generator.py", line 116, in update_mos
    call(['msgfmt', po, '-o', mo_out])
  File "/usr/lib/python2.6/subprocess.py", line 470, in call
    return Popen(*popenargs, **kwargs).wait()
  File "/usr/lib/python2.6/subprocess.py", line 621, in __init__
    errread, errwrite)
  File "/usr/lib/python2.6/subprocess.py", line 1126, in _execute_child
    raise child_exception
OSError: [Errno 2] No such file or directory

Im using Ubuntu 9.10 kernel 2.6.31-15-generic

Can someone help me please!

Thanks!!!