To start your year off right I would like to announce Blu-Ray disc playback is now available in LinuxMCE. This is still in early stages and there are some system bits that still need to be flushed out but the basic functionality is there now.
sqlcvs update your dce repo
apt-get update && apt-get upgrade && apt-get install libaacs-data-installer libbdplus-data-installer
This will get you completely OSS BD playback. Many discs manufactured before 2012 will play but lots will not.
To add a closed source package that will allow you to play back most discs you can then
apt-get install makemkv-bin
This will automatically replace the OSS libs and use the closed source makemkv package. Please note: MakeMKV is a time limited piece of software, it expires after 30 days and new packages will need to be created and installed. If you have issues with this you can allways uninstall makemkv-bin and makemkv-oss to return to full OSS playback.
ps. Just like using libdvdcss to playback DVD discs in Linux using libaacs and libbdplus could be restricted in your region.