I tried splitting the MKV into smaller files to test it on the USB input of my blu-ray player. Lots of stuttering like the file was corrupted, but the audio was fine. The full MKV plays perfectly fine on my Mac mini via VLC though. Wishing I could solve this one as I'd love to play this through the projector.
Anyone else got any suggestions for remuxing it into a fully bluray compliant file? Cheers.