--multi-mode option does not work

[shoh7EuR]

Binary package hint: jack

Note: this is about jack (Rip and encode CDs with one command), NOT about jackd (JACK Audio Connection Kit)
When running "jack --multi-mode" following error is produced:
This is jack 3.1.1 (C)2004 Arne Zellentin <email address hidden>
Traceback (most recent call last):
  File "/usr/bin/jack", line 101, in <module>
    toc_just_read = jack_prepare.find_workdir()
  File "/usr/lib/pymodules/python2.6/jack_prepare.py", line 120, in find_workdir
    err, jack_tag.track_names, jack_tag.locale_names, cd_id, revision = freedb_names(jack_freedb.freedb_id(jack_ripstuff.all_tracks), jack_ripstuff.all_tracks, jack_ripstuff.all_tracks, os.path.join(i, cf['_freedb_form_file']), verb = 0, warn = 0)
NameError: global name 'freedb_names' is not defined

I tried to fix this with a change
in /usr/lib/pymodules/python2.6/jack_prepare.py:
@ line 120:
changed freedb_names changed into jack_freedb.freedb_names:
  err, jack_tag.track_names, jack_tag.locale_names, cd_id, revision = jack_freedb.freedb_names(jack_freedb.freedb_id(jack_ripstuff.all_tracks), jack_ripstuff.all_tracks, jack_ripstuff.all_tracks, os.path.join(i, cf['_freedb_form_file']), verb = 0, warn = 0)

No I get following error:
This is jack 3.1.1 (C)2004 Arne Zellentin <email address hidden>
Traceback (most recent call last):
  File "/usr/bin/jack", line 101, in <module>
    toc_just_read = jack_prepare.find_workdir()
  File "/usr/lib/pymodules/python2.6/jack_prepare.py", line 123, in find_workdir
    info("matching dir found: %d" % i)
TypeError: %d format: a number is required, not str

I tried to fix this with a change
in /usr/lib/pymodules/python2.6/jack_prepare.py:
@line 123:
changed info("matching dir found: %d" % i) into info("matching dir found: %s" % i)

After these two changes no more complaints.
Extra info:
> lsb_release -rd
Description: Ubuntu 10.10
Release: 10.10
> apt-cache policy jack
jack:
  Geïnstalleerd: 3.1.1+cvs20050801-26
  Kandidaat: 3.1.1+cvs20050801-26
  Versietabel:
 *** 3.1.1+cvs20050801-26 0
        500 http://be.archive.ubuntu.com/ubuntu/ maverick/universe amd64 Packages
        100 /var/lib/dpkg/status