All of the media players on my system now open .iso video files without extracting or mounting them (Splayer, VLC, & MPC-HC.) WMP & Media Center will even do it if I'm on a 32-bit system. In addition they all play split rar files the same way. Also, Mediamonkey is still a 32-bit app so it shouldn't have too much trouble implementing the same methods.
Please, please look into this for us?
My current favorite software: MediaMonkey Gold!