Looking good Ace. Bang tidy build there.
Bit warm for my liking as the max temp I believe is 74ºC for AMD Trinity but for just htpc duties it should stay some way below that.
Agreed. Very much sounds like codec issue. I'm running Windows 8 and XBMC through a cheapish Yamaha AVR and had some issue issues initially. Downloaded MPC-HC and FFDShow codecs which sorted it out. Will it play using other media players like VLC?
Plays fine via Media player classic with the klite codec pack installed. I will have another play tomorrow and yes set to enable HDMI passthrough