I'm really hoping somebody could help me with this. I have some h.264 MKV 1080P movies that I'm trying to play with my latest gen MBP. The computer chokes with these type of movies using VLC player. The audio plays but the video skips like crazy. Upon somebody else's suggestion I tried using Mplayer. With Mplayer the video plays fine but the audio skips every few seconds. I even tried installing a beta version of Perian with Quicktime but that puts out a screeching sound every few seconds. Any ideas or hope of playing these freakin MKV files on my computer???