That is because Plex does not support ISO playback!
Any other file format would work fine. I ripped all my DVD-ISO's to MKV's with MakeMKV but I am slowly replacing them all with BluRay rips! And no the Plex GUI does not look as nice as XBMC on a PC.
But it looks a lot better then the non-exciting XBMC on Roku
Remember that Plex is a Server + Client approach with means one Server and unlimited Clients on a lot of devices(iOS,Android,DNLA,Roku...etc).
If you are like me and just need a system for playing back local media to several devices Plex is the best way to go.
If you are building a HTPC you could also install Plex on that and personally I like the Plex Client GUI better then the XBMC one.
But that of course is personel.
MacMini i5 PlexServer/Client + 12Gig RAID
ATV3 (no Plex)
Sony KDL46NX720 (DNLA/PlexClient)
iPhone 3GS/4/4S (iOS PlexClient)
Ipad, iPad3 (iOS PlexClient)
Joined: Apr 2012
2012-04-26 14:42 Post: #11
Joined: Oct 2009
2012-04-29 01:42 Post: #12
Jailbroken Apple TV.
Joined: Apr 2011
2013-06-09 15:46 Post: #13
I just picked up a Roku 3 box for my bedroom (dumb TV in there). I put Plex server on my XBMC, Frodo, Windows 7 HTPC. Using the free Plex channel on the Roku, I can watch my Movies and TV Shows perfectly!
PS, I'm using the Roku wirelessly. Very easy to set up...