Is it at all possible to get MKVs to play with AC3 audio without buying a new receiver? Meaning could a root or firmware update fix it? I have absolutely tons of MKVs and it appears all of them have AC3 audio. The 720p video will play but the audio won't work. The 1080p video flat out doesn't work. I bought GTVbox hoping it would work but it doesn't help. I owned a WDTV before the co-star and all my videos played on it. The fact that I can't get a single one of my MKVs to play has rendered the co-star pretty much useless for me. So that's why I'm wondering if it's possible it will ever work. If not than I'll have to sell it and go another route.