I am trying to install the 32-bit gstreamer plugins on my 64-bit system (Ubuntu 12.10 based). I can install the packages gstreamer0.10-plugins-base:i386 and gstreamer0.10-plugins-good:i386. However, gstreamer0.10-plugins-bad:i386, gstreamer0.10-plugins-bad-multiverse:i386 and gstreamer0.10-plugins-ugly:i386 conflict with 64-bit packages already installed on my system:

$ sudo apt-get install gstreamer0.10-plugins-bad:i386
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 gstreamer0.10-plugins-bad:i386 : Depends: libass4:i386 (>= 0.9.7) but it is not going to be installed
                                  Depends: libdca0:i386 but it is not going to be installed
                                  Depends: libdvdnav4:i386 (>= 4.2.0+20120524) but it is not going to be installed
                                  Depends: libdvdread4:i386 but it is not going to be installed
                                  Depends: libslv2-9:i386 (>= 0.6.4-1~) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

...

$ sudo apt-get install gstreamer0.10-plugins-bad-multiverse:i386
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following extra packages will be installed:
  libavcodec53:i386 libavutil51:i386 libfaac0:i386 libfaad2:i386 libgsm1:i386
  libmjpegtools-1.9:i386 libmp3lame0:i386 libquicktime2:i386
  libschroedinger-1.0-0:i386 libswscale2:i386 libva1:i386 libvpx1:i386
  libx264-123:i386 libxvidcore4:i386
The following packages will be REMOVED:
  gstreamer0.10-plugins-bad-multiverse libfaac0 libmjpegtools-1.9
  mint-meta-codecs
The following NEW packages will be installed:
  gstreamer0.10-plugins-bad-multiverse:i386 libavcodec53:i386 libavutil51:i386
  libfaac0:i386 libfaad2:i386 libgsm1:i386 libmjpegtools-1.9:i386
  libmp3lame0:i386 libquicktime2:i386 libschroedinger-1.0-0:i386
  libswscale2:i386 libva1:i386 libvpx1:i386 libx264-123:i386 libxvidcore4:i386
0 upgraded, 15 newly installed, 4 to remove and 5 not upgraded.
Need to get 9,198 kB of archives.
After this operation, 23.3 MB of additional disk space will be used.
Do you want to continue [Y/n]?

...

$ sudo apt-get install gstreamer0.10-plugins-ugly:i386
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 gstreamer0.10-plugins-ugly:i386 : Depends: libdvdread4:i386 but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

This means that I can't play mp3s (among other things) in 32-bit applications that use gstreamer. Is there a way around this?