Hello, I think some of the BlueRay players are now starting to offer this from a DLNA compliant NAS drive, I'm sure I've seen an LG that got good reviews. Of course, you'd need a computer or something to rip the disks in the first place
After my experience playing AVI via an XBox (not 360) and via the Toshiba XDE 500, (much better sound and imporved picture with the Tosh), I'm potentially looking at this route if the players are a reasonable price.
Things like the Popcorn Hour do look interesting, though, but I'm never quite sure about the AV quality. I'd be interested in any opinions.