Normal
What about http://www.winmount.com/ ? It's not a free app, but it's the first thing I found before leaving from work (gotta get outta here!). Web site says "It can be used to mount ZIP, RAR, ISO,etc archives very fast, which enabling you to use the files inside it directly without needing extract it beforehand." Sounds like what we're talking about... Would then need a way to make MediaPortal auto-mount the rar's and read from there, right?