Audio losing sync during playback, MKV

I have several MKV’s that play fine on my Macs and PCs but on my WDTV Live (firmware 1.04.10_B but same problem on earlier firmwares as well) the audio gets out of sync very quickly. The WDTV Live is hooked up to my 40" LCD with HDMI only. Media info for the file is:

GeneralComplete name                    : D:\hockey.mkvFormat                           : MatroskaFile size                        : 2.34 GiBDuration                         : 1h 36mnOverall bit rate                 : 3 485 KbpsEncoded date                     : UTC 2010-12-12 12:31:42Writing application              : mkvmerge v3.2.0 ('Beginnings') built on Feb 12 2010 16:46:17Writing library                  : libebml v0.7.9 + libmatroska v0.8.1VideoID                               : 1Format                           : AVCFormat/Info                      : Advanced Video CodecFormat profile                   : Main@L4.0Format settings, CABAC           : YesFormat settings, ReFrames        : 4 framesFormat settings, GOP             : M=4, N=32Codec ID                         : V_MPEG4/ISO/AVCDuration                         : 1h 36mnBit rate mode                    : VariableBit rate                         : 3 032 KbpsMaximum bit rate                 : 20.0 MbpsWidth                            : 1 280 pixelsHeight                           : 720 pixelsDisplay aspect ratio             : 16:9Frame rate                       : 59.940 fpsColor space                      : YUVChroma subsampling               : 4:2:0Bit depth                        : 8 bitsScan type                        : ProgressiveBits/(Pixel*Frame)               : 0.055Stream size                      : 2.03 GiB (87%)Color primaries                  : BT.709-5, BT.1361, IEC 61966-2-4, SMPTE RP177Transfer characteristics         : BT.709-5, BT.1361Matrix coefficients              : BT.709-5, BT.1361, IEC 61966-2-4 709, SMPTE RP177AudioID                               : 2Format                           : AC-3Format/Info                      : Audio Coding 3Mode extension                   : CM (complete main)Codec ID                         : A_AC3Duration                         : 1h 36mnBit rate mode                    : ConstantBit rate                         : 384 KbpsChannel(s)                       : 2 channelsChannel positions                : Front: L RSampling rate                    : 48.0 KHzBit depth                        : 16 bitsCompression mode                 : LossyStream size                      : 264 MiB (11%)

 Any ideas? I bought this box to avoid having to bring my MacBook to the TV but as of now, I still have to as the WDTV Live failes to playback the files properly. Any feedback is appriciated!

Until new firmware comes out I would roll back to previous to play MKV.  Wireless or wired connection?.  Does the file play on an attached storage drive?

Sorry yes, this is played from a USB-stick.

Decided to not purchase another WDTV Live because of this issue so the lack of support has resulted in loss of business, what a shame :confused: