I have the same problem as rcadden, I created an .AVI with irriviter that has a resolution of 400x240 and tried playing it through orb (as well as a DVD that I had on hard disk) and get the same message "video resolution not supported". It looks like it works if I browse to mycast via a browser on another PC, so at least it is getting through my firewall ok. There is a reference from luketoh about installing a K-Lite codec pack, would this address the "video resolution not supported" issue or another issue. Also, I take it, that the codec pack would be installed on the Orb PC, correct?