Does it show you that message with a "still" tv image in the background? If so, try pressing the play button on your remote (|>) many times. I had that problem with some Sky F1 mkv's and that's how I managed to watch them. Dunno if those were mono or even if it's the same issue. Cheers
ASUS O!Play HDP-R1 (Bootcode 23) AMP r10 (iconBIT skin) IPTVList 1.5.0 by Hax
AMP R8 is the right choice although I am not sure if it will read more codecs... And never count on WiFi for video streaming. What you want for video streaming is Ethernet connection. Cheers
ASUS O!Play HDP-R1 (Bootcode 23) AMP r10 (iconBIT skin) IPTVList 1.5.0 by Hax