I think this issue should be closed. This was reported for a very old release and is definitely working in the 2.x releases.
If this should be still an issue for anyone this should be brought upstream.
Philipp
> Package: picard
> Version: 1.0-1
> Severity: normal
>
> Lately, picard has trouble downloading album data. After dragging some music files (generated and tagged by sound-juicer) to the window on the right, picard instead of displaying the album title displays "unable to load [MBID]"
>
> Below is an error message from the console:
>
> E: 140379710048000 21:22:54 Network request error for
http://musicbrainz.org:80/ws/2/release/e3f2c3d7-d289-4796-8b4e-407692dea96f; e3f2c3d7-d289-4796-8b4e-407692dea96f?inc=release-groups+media+recordings+puids+artist-credits+artists+aliases+labels+isrcs+artist-rels+release-rels+url-rels+recording-rels+work-rels: Error downloading
http://musicbrainz.org:80/ws/2/release/e3f2c3d7-d289-4796-8b4e-407692dea96f;%20e3f2c3d7-d289-4796-8b4e-407692dea96f?inc=release-groups+media+recordings+puids+artist-credits+artists+aliases+labels+isrcs+artist-rels+release-rels+url-rels+recording-rels+work-rels - server replied: Bad Request (QT code 299, HTTP code 400)
> E: 140379710048000 21:22:54 u'Error downloading
http://musicbrainz.org:80/ws/2/release/e3f2c3d7-d289-4796-8b4e-407692dea96f;%20e3f2c3d7-d289-4796-8b4e-407692dea96f?inc=release-groups+media+recordings+puids+artist-credits+artists+aliases+labels+isrcs+artist-rels+release-rels+url-rels+recording-rels+work-rels - server replied: Bad Request'
>
> When I look up the album directly on the musicbrainz website instead and click the "tagger" icon, picard retrieves the album data just fine.
>
> This doesn't happen with every music file, but with many if not most of them.
>
> -- System Information:
> Debian Release: wheezy/sid
> APT prefers testing
> APT policy: (990, 'testing'), (500, 'unstable'), (250, 'experimental')
> Architecture: amd64 (x86_64)
> Foreign Architectures: i386
>
> Kernel: Linux 3.2.0-3-amd64 (SMP w/4 CPU cores)
> Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8)
> Shell: /bin/sh linked to /bin/dash
>
> Versions of packages picard depends on:
> ii libavcodec53 7:0.10.3-dmo1
> ii libavformat53 7:0.10.3-dmo1
> ii libc6 2.13-35
> ii libdiscid0 0.2.2-3
> ii libfftw3-3 3.3.2-3
> ii libgcc1 1:4.7.1-2
> ii libofa0 0.9.3-5
> ii libstdc++6 4.7.1-2
> ii python 2.7.3~rc2-1
> ii python-mutagen 1.20-1
> ii python-qt4 4.9.3-4
> ii python2.7 2.7.3-3
>
> picard recommends no packages.
>
> picard suggests no packages.
>
> -- no debconf information
>
>