Description

This GStreamer plugin may be needed by some games and multimedia applications to play audio content.
See Missing libgstreamer1 library for more details.

Resolution

On CrossOver 17 and greater, the simplest solution to fix this issue is to run:

/path/to/cxoffice/bin/cxfix missinggstreamer1mpg123audiodec missinggstreamer1mpg123audiodec.amd64

Or add --show-all to see how CrossOver would fix it on your platform and others.

Alternatively you may try one of the commands below.

• For 32-bit Windows applications
  32-bit Arch Linux : pacman -Syu gst-plugins-good
  64-bit Arch Linux : pacman -Syu lib32-gst-plugins-good
  Debian (1) : apt-get install gstreamer1.0-plugins-ugly:i386
  32-bit Fedora : dnf install --best gstreamer1-plugins-ugly-free
  64-bit Fedora : dnf install --best gstreamer1-plugins-ugly-free.i686 gstreamer1-plugins-ugly-free.x86_64
  32-bit openSUSE : zypper install gstreamer-plugins-ugly
  64-bit openSUSE : zypper install gstreamer-plugins-ugly-32bit
• For 64-bit Windows applications
  Arch Linux : pacman -Syu gst-plugins-good
  Debian (1) : apt-get install gstreamer1.0-plugins-ugly:amd64
  Fedora : dnf install --best gstreamer1-plugins-ugly-free.x86_64
  openSUSE : zypper install gstreamer-plugins-ugly

Notes:

• cxfix --show-all may have more up-to-date fixes.
• The commands usually also apply to derived distributions. So for instance a fix for Debian is typically also applicable to Ubuntu, Linux Mint, Deepin and Pop! OS. Similarly a fix for Fedora likely also works on Red Hat Enterprise Linux, CentOS, etc.
• (1) Before Debian 10 the package containing the 32-bit plugins is incompatible with the 64-bit one. This also impacts the derived distributions such as Ubuntu, Pop OS!, etc. On affected distributions you will have to choose between the 32-bit plugins (for 32-bit Windows applications) and the 64-bit plugins (for your Linux applications such as Firefox).