There is a stop gap measure available called WinMount. It will mount a .rar archive as a virtual drive. It will also take command line commands so it could probably be made to work with mediaportal. You would still need to browse for the rar file, run the script to mount it and then browse to that virtual drive to play the video.
And we all know that the reason to have videos in split up .rar archives is to make downloading them faster as you can download from several sources at once. A bit like a manual bittorent you could say.
And we all know that the reason to have videos in split up .rar archives is to make downloading them faster as you can download from several sources at once. A bit like a manual bittorent you could say.