TrueHD is buggy atm. Higher bitrate .MKVs with TrueHD audio stutter or even stop playback completely>>>connected via Ethernet? have you tried via eSATA/usb?
BTW do youknow if sony BDP-CX960 plays mkv?
I'm good with mkvs[FULL BIT RATE 1080P]-plex-synology san-mac mini setup for another year if needed only wish truehd/master hd passthroughs are possible
i love the instantaneous play of mkvs..I'll save alot of TBs not going BD-ISOs