The 32-bit versions of the gstreamer plugins conflict with their 64-bit equivalents. Not all of them do however:
sudo apt-get install gstreamer0.10-plugins-base:i386
Works
sudo apt-get install gstreamer0.10-plugins-good:i386
Works
sudo apt-get install gstreamer0.10-plugins-bad:i386
> 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
Trying to install gstreamer0.10-plugins-bad-multiverse:i386
> The following packages will be REMOVED:
> gstreamer0.10-plugins-bad-multiverse libfaac0 libmjpegtools-1.9
> mint-meta-codecs
Trying to install gstreamer0.10-plugins-ugly:i386
> The following packages have unmet dependencies:
> gstreamer0.10-plugins-bad:i386: Depends: libdvdread4:i386 but it is not going to be installed
This means that 32-bit applications can't use any of the media plugins in those packages. This includes especially mp3 playback.
Mint version: Mint 14 MATE 64-bit
The 32-bit versions of the gstreamer plugins conflict with their 64-bit equivalents. Not all of them do however:
sudo apt-get install gstreamer0. 10-plugins- base:i386
Works
sudo apt-get install gstreamer0. 10-plugins- good:i386
Works
sudo apt-get install gstreamer0. 10-plugins- bad:i386 10-plugins- bad:i386 : Depends: libass4:i386 (>= 0.9.7) but it is not going to be installed
> The following packages have unmet dependencies:
> gstreamer0.
> 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
Trying to install gstreamer0. 10-plugins- bad-multiverse: i386 10-plugins- bad-multiverse libfaac0 libmjpegtools-1.9
> The following packages will be REMOVED:
> gstreamer0.
> mint-meta-codecs
Trying to install gstreamer0. 10-plugins- ugly:i386 10-plugins- bad:i386: Depends: libdvdread4:i386 but it is not going to be installed
> The following packages have unmet dependencies:
> gstreamer0.
This means that 32-bit applications can't use any of the media plugins in those packages. This includes especially mp3 playback.