Any idea why Q10 ii cannot decode aac on mkv downloaded

from Ganool.com?Only downmix to 2 channel.

Samsung bd player output 5.1 no problem the

same mkv file.On Himedia setting on sound as follow-

Hdmi output-Raw,Spdif output-Raw,Hbr degrade-Ram 7.1.

Conneting from himedia to avr then output to plasma tv.

Have tried playing with different setting using hdmi

or toslink optical cable still not success.Please help.Thank you.