Totem Video Player Missing Mono Audio Preference

The Totem video player provides Audio output options, but is missing the "Mono" option. See:

Totem > Edit > Preferences > Audio > Audio output type

My Dell Studio 17 is suffering from another bug where I'm unable to hear audio out of its left-internal-speaker:
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1075405

I have an AVI file that only has audio for the left channel, so I'm unable to hear this video in Totem.

However, using VLC, I can simply click on the video while it is playing, and then make both speakers play the left channel.

If Totem would provide a "Mono" option in its Audio Preferences menu, I'd probably be able to hear the file in Totem is well.

I realize that this is a special case, but there are probably other reasons why someone would prefer mono over stereo.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: libgstreamer0.10-0 0.10.36-1ubuntu2
ProcVersionSignature: Ubuntu 3.5.0-21.32-generic 3.5.7.1
Uname: Linux 3.5.0-21-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.6.1-0ubuntu9
Architecture: amd64
Date: Wed Jan 16 05:11:51 2013
InstallationDate: Installed on 2012-11-28 (48 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gstreamer0.10
UpgradeStatus: No upgrade log present (probably fresh install)