I just received this box for Christmas and ive been having problems with the audio on just about all of my channels. Video works perfectly but the audio is stuttering. Ive tried increasing the buffer rate, Ive tried reverting back to an older firmware but every time i do my box tells me the files are corrupt, but the files are from the infomir website. I cant revert back to a previously installed firmware on the box because there isnt one. does anyone else have any advice that i could try or should i just take the box back and get something different?