“Why won't MP4 files play off usb? I have a working usb stick with a few MP4 files converted with Aieesoft blu ray converter. The files play perfectly on pc and ps3 but won't play on the DX-WRBDVD1-CA upstairs. Dragging my pc and ps3 upstairs every time my family wants to watch a movie is stupid and pointless, thats why I got this player in the first place.”