Make sure the media player you are buyng can play all kinds of MKV files. The Clamul i bought could not. I already consulted their technical. He told me that he will come back to me very soon.

I already sove the dts problem with an optic cable. clamul can passed thought dts 5.1 The mkv files that cannot be played was shown 'unsupported file'

Yes, I am also facing problems with MKV files.  Do remember MKV is a just a container like AVI. Inside the container might have the movie encoded in codecs not supported by the media box.  

I recently tested a MKV file with x264 720p video and audio DTS.  Video came out clearly but no audio. I am now using coaxial cable to connect to my amplifier. I will buy an optical cable to see if it solves this problem as my amplifier also has optical inputs.
Anther thing is I feel a lot of us here have over expectations on the media box. Do remember it is a standalone media box with many firmwares inside to decode the various files formats available today. There is bound to be formats that cannot be decoded fully.

Let's put it this way. For only RM 399, I also was disappointed but not heart broken. I would say for me, this media box is a transition until I can afford to get a proper Media PC with HDMI with surround outputs. 

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Added on July 18, 2009, 6:57 am
Guys,

I use Gspot codec appliance to check the information for my AVI files. Does anyone know is there any application to check for MKV files. I dont think Gspot can read MKV files